Malicious PDF — malware analysis report

Static analysis result for SHA-256 08796dec06567a7c…

MALICIOUS

PDF

69.6 KB Created: 2021-04-14 22:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 56de594d68c74dae623fbfae9cb4e102 SHA-1: 24cbd34796d881a9f8fdc6b6774a3d752e18bc2d SHA-256: 08796dec06567a7c10cbc7dea813618b4376b681f758a05cd71f3930ffe71eee
246 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The heuristic 'SE_BRAND_CREDENTIAL_PHISH' specifically identifies an Apple brand impersonation lure pointing to a redirector, strongly suggesting a credential phishing attempt. No scripts were extracted, but the embedded URLs are the primary mechanism for the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://vokuduvalabi.weebly.com/uploads/1/3/4/5/134502282/vuviwizer.pdf.
  • 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.
  • 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://kuzutuzo.ru/strik?utm_term=the+giver+book+test+answers PDF link annotation
    • https://vokuduvalabi.weebly.com/uploads/1/3/4/5/134502282/vuviwizer.pdfIn PDF document text
    • http://kuzexamipapoxip.medianewsonline.com/wapivesifenuxazarulube.pdfIn PDF document text
    • https://lesikikonojen.weebly.com/uploads/1/3/0/7/130740189/fukuvakezu.pdfIn PDF document text
    • https://cdn.sqhk.co/gusoguribus/Jhaiojj/80189077954.pdfIn PDF document text
    • https://cdn.sqhk.co/dubezaxuviz/UWbhafe/rowubek.pdfIn PDF document text
    • https://dapunilak.weebly.com/uploads/1/3/4/5/134506399/7313788.pdfIn PDF document text
    • https://juwavade.weebly.com/uploads/1/3/4/5/134526694/18f056dac3b080.pdfIn PDF document text
    • http://zefefiwova.medianewsonline.com/mastering_elliott_wave.pdfIn PDF document text
    • https://mafobosapufi.weebly.com/uploads/1/3/4/5/134505980/68ba2b8.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/oral_b_triumph_professional_care_toothbrush_heads.pdfIn PDF document text
    • https://xefomivor.weebly.com/uploads/1/3/0/8/130814633/561265.pdfIn PDF document text
    • http://suzamakulamuj.mypressonline.com/nikon_d500_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/gokovolasula/hmiagee/so_easy_rewards_login.pdfIn PDF document text
    • https://cdn.sqhk.co/rokajoten/iabgfgf/epic_battle_simulator_ps4.pdfIn PDF document text
    • https://kunefenirubineb.weebly.com/uploads/1/3/0/7/130739500/4326969.pdfIn PDF document text
    • http://xezixaz.getenjoyment.net/innate_vs_adaptive_immunity.pdfIn PDF document text
    • https://tarebizadutobi.weebly.com/uploads/1/3/4/3/134310067/juwisorogikoro.pdfIn PDF document text
    • https://vatewiwep.weebly.com/uploads/1/3/4/4/134482367/419386.pdfIn PDF document text
    • https://gebikatewizej.weebly.com/uploads/1/3/4/3/134311033/gijibu.pdfIn PDF document text
    • https://juwomazitebuden.weebly.com/uploads/1/3/1/4/131414743/lafonuwavon.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/1ca84fcf-6a1d-454a-ad8a-c4980217108b/57004203010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3401b5de-63a9-440f-9db1-13bd1b9c6121/48939247545.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_off0000d2b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B3 5220 bytes
SHA-256: af31eaecb6a390910e7a41c02e52044bac602015c67cf3ca78a675ceca52e287
font_01_sfnt_off0000e489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE489 10312 bytes
SHA-256: 8d57f7f414f2d178d20f21f92218d6a664ef1564405d88ee95e3112dd7a3f074

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