Malicious PDF — malware analysis report

Static analysis result for SHA-256 82cc0a8ef80fd661…

MALICIOUS

PDF

94.5 KB Created: 2021-06-28 22:56:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8e7778e3dd91942ef8d656756a2b7e36 SHA-1: 70a437df849ab50af7b2e36eb4377944933bbd03 SHA-256: 82cc0a8ef80fd6614604f7f64b8bac687700b368dfbc2706565ed42dd3133407
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised CMS uploads, suggesting a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the attack pattern of luring users into downloading a payload. No scripts were extracted, but the overall structure and URL findings point to a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

Heuristics 7

  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://infrive.ru/uplcv?utm_term=ford+mustang+gt500+shelby+super+snake PDF link annotation
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/d4c9b80056c513954decc6e125f32501/69096360864.pdfIn PDF document text
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/431feba9bb7a1a3ba2775119e5816835/7215563254.pdfIn PDF document text
    • http://rosesrealtyhomes.com/userfiles/files/87500612419.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c1add40b4a3---pusaraxusim.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b59ea4a4bcb---rajep.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608195a101486---6716588729.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c660c155b9---91097572347.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/11b08e32f4523e74872925a27a5c9af0/vexekebijebexatozegitev.pdfIn PDF document text
    • https://osikovo.eu/webroot/img/content/files/71054302684.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/114a37917ad0018414599720436ef207/wudotesuwajaxoladivorip.pdfIn PDF document text
    • https://morganmethod.com/ci/userfiles/files/12885512814.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160804c8d45165---jifim.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/gonimaga.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/fgphpnrftlk66i2oq1cktu576v/96303457199.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/e4m027nmphuaugcoovqm27n5e2/19088194401.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/aj5d8rfl9fu5o25hgdp1oa39mq/66851372200.pdfIn PDF document text
    • http://happy-travel089.com/CKEdit/upload/files/20716783179.pdfIn PDF document text
    • http://hytechplus.com/userfiles/file/42500659062.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16089ee048fe4d---37898065407.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/9omb5344flrsn14mqn7aetea30/76355559923.pdfIn PDF document text
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/61679688171.pdfIn PDF document text
    • http://beiwendq.com//data/attachment/file/14841361563.pdfIn PDF document text
    • http://barrybusiness-crm.com/ressource/devis-photo/files/delemop.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/nvogd0mjs6pfeqc19cu4t52lnl/gewavixureloraxer.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_off00010a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A74 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001228b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1228B 11428 bytes
SHA-256: ea8a20f8ced6ca8a4f74973e63c41c100bacd348347b8907e9abf37d446f158d
font_02_sfnt_off00013cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CF3 18492 bytes
SHA-256: 442588d2fe23f3345aa47e607d55efd30730903ea4630fe49671ccc4cb37d471

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