Malicious PDF — malware analysis report

Static analysis result for SHA-256 789067ed895a811c…

MALICIOUS

PDF

75.1 KB Created: 2021-03-02 03:44:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 7649a9712021a2a26430e0190b60ab4b SHA-1: 71a0999f56ef4e384bde9fdbcd61845b8bfbde90 SHA-256: 789067ed895a811c19efa47f3c86d894ae676d79faff0fb52b3b735adf0dc1cf
184 Risk Score

Malware Insights

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

This PDF file is classified as malicious and contains numerous embedded URLs pointing to disposable hosting and known malicious redirectors. The document body, though heavily obfuscated, appears to be a lure related to 'Kenmore elite he4 washer error codes', suggesting a phishing or scam attempt. The presence of multiple links to potentially malicious infrastructure indicates an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=kenmore+elite+he4+washer+error+codes In PDF document text
    • https://cdn.sqhk.co/wowixepis/r2ihAih/30290855353.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424672/normal_5fcbd42f1cad0.pdfIn PDF document text
    • https://zujuwedidikaf.weebly.com/uploads/1/3/4/3/134375258/mudunawedug.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/VcjjCOw/40534230967.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/27995672841.pdfIn PDF document text
    • https://parafobosa.weebly.com/uploads/1/3/1/8/131857791/ruxutisox_tejirajosenotuk_wubitimusijo.pdfIn PDF document text
    • http://jiwabozaxexe.mypressonline.com/jovifamutuwonef.pdfIn PDF document text
    • http://pribor-poverka.site/zojepewiwapohwplj.pdfIn PDF document text
    • http://shop-you.xyz/vawumaloragegunib6frz0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482403/normal_602d096ee328f.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/hebggia/batadozupuwumekowojigufa.pdfIn PDF document text
    • http://genusadnlo.space/76269277239wh21d.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvaratuji/5vhbgfo/veputu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463034/normal_5fd2f576779b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421339/normal_5fd681627417a.pdfIn PDF document text
    • http://sovolox.getenjoyment.net/north_carolina_criminal_justice_education__training_standards_commission.pdfIn PDF document text
    • http://bafiselavanebep.mywebcommunity.org/bible_interpretation_books.pdfIn PDF document text
    • https://lawukexudemodu.weebly.com/uploads/1/3/4/0/134041757/2432934.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tumasun/citrix_workspace_environment_management_installation_guide.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_off0000e8f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F6 5328 bytes
SHA-256: cee019725afe39d494a46de21d723a169e1d0a9cd3edf50497f002b3991697c8
font_01_sfnt_off0000fafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFC 10632 bytes
SHA-256: e8062e6ab5539e73bca65c49353fbf329c6c3ab21cb2f237d9fe6f047e944dec

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