Malicious PDF — malware analysis report

Static analysis result for SHA-256 8abdec1fe9a5871e…

MALICIOUS

PDF

86.6 KB Created: 2021-06-29 23:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 3142cb5aa1fc41b42a45f3f66b7a0be9 SHA-1: b21e979191c7665c673c64341a0e5ed125ca2004 SHA-256: 8abdec1fe9a5871e83cc11e70dcc034b0c1043062d6e06c1155c2bc687829dde
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is often used to initiate malicious actions. The document also features a large number of external links, many hosted on compromised websites or disposable domains, suggesting a phishing or credential harvesting attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://coretry.ru/uplcv?utm_term=heart+pounding+after+eating PDF link annotation
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/7fe7cc2a57504d4c3e42c83ced7786cb/43718685480.pdfIn PDF document text
    • http://sns-russia.ru/userfiles/file/44258536062.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b1e565e971d---jezusavelepaxeta.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/xepidavosaxapenesuvubu.pdfIn PDF document text
    • https://llibreriaha.com/img/events/file/piwamewixiji.pdfIn PDF document text
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/dfcbff08c4ac4d9b2bac0243508b15b0/vegizixakumawinakofovo.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074b30a51107---29576847407.pdfIn PDF document text
    • https://monuments-msk.ru/wp-content/plugins/super-forms/uploads/php/files/c3c37aacb92d2947022dec1809e5a634/36654539052.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/2ce432e706a64037eae5de8169dedbcf/rimakonovafobe.pdfIn PDF document text
    • http://stylowa-pss.pl/userfiles/file/lazuposawuranopivopu.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072632d72e18---74132159894.pdfIn PDF document text
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/5c1u40d5v1u9vdsd6281r71t1d/18257504525.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/57169062017.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/tanuminosofaxota.pdfIn PDF document text
    • http://sincaremedicaltour.com/js/upload/buvebasufobidekepobotax.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/0d8fe13d041f46a8d93aa208bddfa800/xinasiwulopaderelipij.pdfIn PDF document text
    • http://www.europesolidaire.eu/userfiles/files/vasavogesafopi.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/45f4a20261bbd433ac8ca71b83bddb8f/24561206847.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/16082472f82b1d---lutigakupuvokaxejupik.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16078b5ab27f23---59197751142.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5379413c76---38552693065.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16087d8d669752---nimixekiru.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_off0000ef2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10741 10548 bytes
SHA-256: b80524b7024c6b055fc308968802ff67df48351fc4ae51ad3e890b05f2265c6f
font_02_sfnt_off00011f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F1A 17056 bytes
SHA-256: 2036eda2cf1d91cd74c5936777a95c98dd9d9e0305422c9dcdffdc0931cab765

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