Malicious PDF — malware analysis report

Static analysis result for SHA-256 96838b3f6bbfa09a…

MALICIOUS

PDF

116.5 KB Created: 2021-03-02 23:14:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: e2eb24b16163496f3d78d6f02cfac8e3 SHA-1: e15b8223f639ba3740ba5bcea21550c08bb00389 SHA-256: 96838b3f6bbfa09adccfc926c0adb7b826a307b4e8564f907f242011b11660c9
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'zajinet.ru', which is likely used to host or redirect to malicious content. The document body, though heavily obfuscated, suggests a lure related to downloading a survival handbook, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/strik?utm_term=sas+survival+handbook+third+edition+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464080/normal_5fd0ae47afcd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393044/normal_600698d7d9737.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427811/normal_5ff7d16ee40e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479705/normal_5fd03431b213b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370780/normal_601ceee9e5886.pdfIn PDF document text
    • https://cdn.sqhk.co/niwexifa/ibktHhd/cell_expansion_wars_level_616.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425229/normal_60060e916fa56.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/gichfhh/17801214785.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/bonovovavap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445731/normal_5fcf61c8ecb5c.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/dMjd2gi/tivosesebag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453332/normal_5ff682cda5732.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/jiwisi/81001806244.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/amathanna_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/control_system_engineering_by_norman_nise_4th_edition_solution_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/22484678447.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/66204341372.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_off00018ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CA8 5588 bytes
SHA-256: 87bea9ae9780fa7e274e25b9deb25a3382b8004706c45569ecd719456dd80d50
font_01_sfnt_off00019fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19FA8 10804 bytes
SHA-256: 56982e2c863f266627877178bb14c29585c018f1fce270635566431398306096

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