Malicious PDF — malware analysis report

Static analysis result for SHA-256 aea2ed9c1ee9218b…

MALICIOUS

PDF

76.3 KB Created: 2021-05-25 01:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d9684541a3094a47ef3d835692db246a SHA-1: 491652a533c32a9c3923cef70ef1eda47e91da12 SHA-256: aea2ed9c1ee9218bfc7b520a2cae552a2f3b6e264f7d399e5d80eaf101c1d2c2
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous external links, with one prominent URL pointing to a suspicious domain associated with a potential phishing or malware distribution campaign. Heuristics indicate a link farm and a callback lure, suggesting the document's purpose is to deceive the user into clicking malicious links or engaging with a fraudulent service. No scripts were extracted, but the PDF structure and embedded links strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://xezojetit.ru/strik?utm_term=how+to+use+dexter+commercial+washer PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453914/normal_5fdf7f875d7f8.pdfIn PDF document text
    • https://zosonokabawim.weebly.com/uploads/1/3/4/3/134316026/lizotugeluxi_bomexalivor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378406/normal_5fcf4c0b88e7d.pdfIn PDF document text
    • https://kepubaxolawava.weebly.com/uploads/1/3/4/7/134703856/vebifikeponuxi_genujojorur_wapijopozez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458623/normal_5ff92ed80026f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c55f1b76-c883-45de-9395-3d8f594b0f41/9_11_wallpaper_for_facebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e3c75f3-0a2b-4e77-b0bc-381d380459b0/fexazapaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fce4b32-e5b3-4222-86e5-00377eba5b7a/samsung_front_load_washing_machine_error_code_3e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce1b725f-ff60-495a-bc4a-057d60335bc3/8134656010.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/9887200242.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/84324586755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c18f8cea-a4e7-4df8-8b9b-075a91bcb321/rodamix.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/how_much_does_business_lawyer_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/90755754644.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/raci_matrix_project_management_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51de2c54-2905-4bdc-8208-f9911b30fed0/construction_safety_jobs_near_me.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7B 5300 bytes
SHA-256: d9afa4bdbab9d0e95ef320a47bb09077b6e63b2fa1433c0b45b416998a060b95
font_01_sfnt_off0000fc5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5B 11640 bytes
SHA-256: a86bf0984a674bfea0c367ef4a85db7f49705f90c26a830f47bdfb6194d42dba

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