Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e6ad4c1582a16f…

MALICIOUS

PDF

75.9 KB Created: 2020-12-20 00:31:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e916e84325c2ca06d64364d09e1c2a75 SHA-1: b5de087e7e8a973ee78972441e1d56b1999a7b44 SHA-256: 38e6ad4c1582a16fc5e5dc27311adaf7e3124bc099cad8e64855efa2a03a89cd
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses brand-impersonation credential phishing. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/5a6f19fa768b88.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://trafficel.ru/123?utm_term=identify+the+advantages+of+social+network+analysis+inquizitive PDF link annotation
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/5a6f19fa768b88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473403/normal_5fa4bc17c9681.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/939334e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366949/normal_5f8eae8226fde.pdfIn PDF document text
    • https://jadusulad.weebly.com/uploads/1/3/4/7/134764450/8357273.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/c34e2ee6-bed8-438a-b353-d1a0b59ed6f3/le_jeu_de_lamour_et_du_hasard.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd458912e20d66685e56d5/t/5fde7b1da478394ebca28165/1608416030396/tv_guide_magazine_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bedbfd62-1559-40c9-8e85-67e7fbfa8cc2/xubebutuboz.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/spherical_bessel_function_fourier_transform.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/android_pinyin_tone_marks.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/blame_the_night_pagalworld.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc648058ef7301f8b35a0c6/t/5fcdeeec3ff10115401539a0/1607331565798/19476000338.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/82796832894.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/60320795171.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_off0000e908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE908 5712 bytes
SHA-256: ebc61a756158dae70298faeaf3ae7d96ac69c95f2429baceb94035573cfd2669
font_01_sfnt_off0000fc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC98 11036 bytes
SHA-256: db506cda411944ab250613d7bbc369a2ca081e866f2150912ec51753598163eb

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