Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f102f58962f14ba…

MALICIOUS

PDF

76.7 KB Created: 2021-05-19 20:09:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ee3c30930fb98380ee1ff30977093914 SHA-1: 2f202db41c88fc397252765c357a3dc0978d167d SHA-256: 9f102f58962f14ba9173e2300ccee5c97d1a60bfa954c95500c3a87aa5896937
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged by multiple heuristics as malicious, including credential phishing and a link farm. It impersonates McAfee to lure users into clicking a link that leads to a redirector, likely to download a second-stage payload. The presence of embedded URLs and the ML classifier output strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://taxurazuzar.weebly.com/uploads/1/3/4/0/134042721/5a7287f.pdf.
  • 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://jacksth.ru/strik?utm_term=hack+avast+free+antivirus+license+key+2020 PDF link annotation
    • https://taxurazuzar.weebly.com/uploads/1/3/4/0/134042721/5a7287f.pdfIn PDF document text
    • https://digokevun.weebly.com/uploads/1/3/4/7/134747151/jozotovatejas.pdfIn PDF document text
    • https://gononazenikemad.weebly.com/uploads/1/3/4/4/134482012/3883466.pdfIn PDF document text
    • https://xivanolub.weebly.com/uploads/1/3/1/3/131380121/penidunimul.pdfIn PDF document text
    • https://nijusalelazi.weebly.com/uploads/1/3/4/8/134875584/51d13d59b1fb4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486061/normal_600f79c8b236f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460982/normal_600a4fc0ac13d.pdfIn PDF document text
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/gejatafekasodine.pdfIn PDF document text
    • https://xiruzavaxukegaf.weebly.com/uploads/1/3/5/3/135324830/divagi_nozalu_dibuferewasigik_satevazidu.pdfIn PDF document text
    • https://batopida.weebly.com/uploads/1/3/4/6/134689087/mujolitetumeposadeto.pdfIn PDF document text
    • https://tanofome.weebly.com/uploads/1/3/5/3/135316841/xububelilawojugek.pdfIn PDF document text
    • https://monijakuxit.weebly.com/uploads/1/3/4/3/134362478/2048864.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/6e538e70-7302-42af-a8a4-262dcf822c98/how_to_take_your_measurements_to_track_weight_loss.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/surodig.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/ledoxulozinejikipoleda.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/85990481940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4831a897-1d20-4c2b-91f6-77d8ae94454a/evenflo_symphony_dlx_convertible_4-in-1_car_seat.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/22949778847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/958094b5-f938-4864-85ad-5ac1c778f5a9/92908879482.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/549a4bb6-7a95-4455-a680-ba7cb3977523/jimamuwapekadedejakew.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_off0000eee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE3 5336 bytes
SHA-256: d2b9f178d23ffaf50a47d3499fa4eb4a4d577583688942f76833b70f7c5733aa
font_01_sfnt_off00010124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10124 10704 bytes
SHA-256: 3177f931d956e0c83069c73aa79360fafe1d5923b4f65ccef02fb62a8eb489d7

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