Malicious PDF — malware analysis report

Static analysis result for SHA-256 709290e2dbc75f38…

MALICIOUS

PDF

85.4 KB Created: 2021-02-14 00:13:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e98e4285d9c55dfde3c0ddad8a258e8 SHA-1: 63392cd719a589d1c2f1502534dc9a46d51b40a6 SHA-256: 709290e2dbc75f382acfb871f98fd693561acda138e937f04571d317e50f7762
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'maypoin.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be related to the URL's keyword, suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=poseidon+and+medusa+tattoo
    • https://cdn.sqhk.co/fakomuse/ae3jbue/lego_batman_beyond_gotham_android_review.pdf
    • https://cdn.sqhk.co/wivodojeg/hfHz9ji/99499038781.pdf
    • https://static.s123-cdn-static.com/uploads/4488804/normal_6006684c52de0.pdf
    • https://cdn.sqhk.co/mabuviko/QG8gdVh/design_studio_graphic_design_invite_logo_maker.pdf
    • https://cdn.sqhk.co/matijamaj/ficEiic/goxafa.pdf
    • http://wwwbcpzonasegura-viabcp.com/taguchi_method_exampleuunvk.pdf
    • https://static.s123-cdn-static.com/uploads/4471988/normal_5fcbfd3823f48.pdf
    • https://static.s123-cdn-static.com/uploads/4491671/normal_5fce99eb4f5d7.pdf
    • http://voirly.xyz/android_watch_for_womenctwbp.pdf
    • https://static.s123-cdn-static.com/uploads/4383687/normal_5fcab528d2861.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vinejivunitego/73858390267.pdf
    • https://s3.amazonaws.com/rafiralexezol/masarege.pdf
    • https://s3.amazonaws.com/gidibesuxi/biochemistry_multiple_choice_questions_and_answers.pdf
    • https://s3.amazonaws.com/jagux/8875707987.pdf
    • https://s3.amazonaws.com/tanapilamaxi/instagram_giveaway_templates_free.pdf
    • https://s3.amazonaws.com/kibavutibeved/samsung_android_oreo_phones_list.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000114fb.bin
c49e84e23dda02e39a230da36e280c2613878d20acd7a23a592ae26b4ec20fee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114FB 4844 bytes
font_01_sfnt_off00012563.bin
1827c68e6f84c228d81302145ec75c64ed1ca33a9a5fa61015721ae22acfb33f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12563 10240 bytes

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