Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e6c08344c05a4e…

MALICIOUS

PDF

82.5 KB Created: 2021-09-06 17:02:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e1f6714c00d63c1843c6676fb01334bb SHA-1: 4c8b66e77d7efbb0519682f42523158344bd8feb SHA-256: 30e6c08344c05a4ec5401731619e3870ca0924aacb840d47852471ba24028658
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple links to external URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of a 'Password-protected archive lure' heuristic indicates the document may be instructing the user to decrypt a payload, further supporting a malicious intent. The ML classifier and ClamAV detection strongly indicate maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://synerhu.ru/uplcv?utm_term=eml+to+pdf+converter+free+online PDF link annotation
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/5effnff0osda7d6ndsiaocabr1/62560302052.pdfIn PDF document text
    • https://fruitssupplier.com/app/webroot/img/files/12828754952.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/79967d576b08bac72731ad8816ec7b44/mimasezegafaf.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d01c93e0c00---pelapolazimulugana.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/b6f9eda99f17c524e75565ad98877c75/zelenipa.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763ac1c9847---vigonerix.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160f51de6eb298---69620882778.pdfIn PDF document text
    • https://italvaping.com/file/nubelovuxe.pdfIn PDF document text
    • http://kingsauto-bar.com/js/upload/files/74716643124.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8d8d47d40---88194831469.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/rogawojakoranutivuro.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/bixovowozimevek.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/bff0408c5c5e483abf176d5902001b1d/molarefafupa.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/o8epgquklfdrm9ijjseftctpb5/85788691195.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160f06fcb92e02---50499440307.pdfIn PDF document text
    • http://ingpiazza.eu/userfiles/files/30341177055.pdfIn PDF document text
    • http://k2plusinterior.com/userfiles/rixipebuwureri.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/80r9gjrej7l78qa20ojltj4dp0/37531877948.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/au1pqrs9341ovdq68feanovl42/8186593896.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/guduwumenolet.pdfIn PDF document text
    • http://lachina.cn/upload/file/45005978061.pdfIn PDF document text
    • https://saunadlaciebie.pl/userfiles/file/ravanosotakabevaj.pdfIn PDF document text
    • http://artistalexanderkanevskywinnerinternationalaward.com/clientMedia/file/ligiwaborijepefimab.pdfIn PDF document text
    • https://verlauf-ekb.ru/admin/ckfinder/userfiles/files/85250016373.pdfIn PDF document text
    • http://goodwill.pl/userfiles/file/suwixifaxulurizuzem.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE86 17700 bytes
SHA-256: 17a7818265720663e56f0ebd8d2aff77c567aa262ae7f6a2e29d7c8f9778cb45
font_01_sfnt_off00010c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C91 10500 bytes
SHA-256: f4e386bcefe70ebe36285bddcee19bfd5e50c7be731fe447c2839220f8dc4bab
font_02_sfnt_off00012461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12461 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.