Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6014ef61b837b27…

MALICIOUS

PDF

75.3 KB Created: 2021-03-28 22:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a656eb6803713ccef0810965cca65eec SHA-1: b015a2bef2e2dc6f5b37bc47d5ae89f188d0b8db SHA-256: c6014ef61b837b27a9a74cbb8a9944637584339d812f95ae4730f45c88620034
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically 'https://leonvi.ru/123?utm_term=audition+2015+free', which is presented as a lure for a free audition. ML classification and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of an external URL in a malicious PDF suggests it's designed to redirect users to a harmful site.

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://leonvi.ru/123?utm_term=audition+2015+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386851/normal_6003f41156a3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382430/normal_605f999edaefb.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/63719922694.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376869/normal_5ff5b1ffbcf2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417531/normal_6013a3712797f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419822/normal_6007b6b3dbeef.pdfIn PDF document text
    • http://zagodutaf.getenjoyment.net/bisacodyl_davis_drug_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408319/normal_60604f5049d9f.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxovugefulo/d8OUpge/coffin_dance_fake_call_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365657/normal_5febdd8671065.pdfIn PDF document text
    • https://cdn.sqhk.co/gituxogud/gW2LUhe/funny_gifs_to_share_on_facebook.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_5444c1a0742641dc8ad02219ec861866.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/88152465937.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/macbeth_act_1._7_guided_reading_questions.pdfIn PDF document text
    • https://bff5fdab-9fd0-4670-908b-a1308bb5a9cb.filesusr.com/ugd/227d0f_7a89df83542c4e8caa3745becee8d4a9.pdf?index=trueIn PDF document text
    • https://9e7b01ce-91ce-414a-93c5-ade8df4b7359.filesusr.com/ugd/cfbfd2_7591f2e1efa844deb4a47c62aa428d13.pdf?index=trueIn 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_off0000eb42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB42 4920 bytes
SHA-256: 72201e821a3e835cff3173515349224604d7a98d2650fa079befa14dd8c5a823
font_01_sfnt_off0000fc20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC20 10700 bytes
SHA-256: 9ff54e5fe82b1e7fbd42b9322ae7ceda8c3c8d05dd0082c13025043a645b3c6c

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