Malicious PDF — malware analysis report

Static analysis result for SHA-256 af6eb57cf1f6b61f…

MALICIOUS

PDF

79.0 KB Created: 2021-02-20 01:26:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6def791f8769726adcaa2a4da8459f42 SHA-1: 5ed72e44231d33b528ccc840c16f55c0eb783def SHA-256: af6eb57cf1f6b61f19df2e0ea1149d942780d9d260b23357382266160cc98ef5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site disguised as a product listing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of external URIs and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/strik?utm_term=craftsman+weedwacker+27cc+carburetor
    • https://cdn.sqhk.co/naketego/BiggjCx/amazon_prime_video_free_movies_to_watch.pdf
    • http://tronreserve.online/ruwikolumogofozumusaripotiu3ev.pdf
    • https://cdn-cms.f-static.net/uploads/4488332/normal_5fd33259868d6.pdf
    • http://zitaranitu.22web.org/what_do_you_say_when_you_anoint_with_oil.pdf
    • http://mokexuvukidifek.iblogger.org/50744698049.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://nupatugo.epizy.com/68343672908.pdf
    • http://bunakakivukutus.epizy.com/37604434544.pdf
    • http://kajufikuxididon.rf.gd/human_anatomy_3d_full_apk.pdf
    • http://devuzobek.rf.gd/uniform_boundedness_theorem_in_normed_space.pdf
    • http://wimosatemegof.rf.gd/31227523604.pdf
    • http://mowiwanafiv.epizy.com/kuzudew.pdf
    • http://putiremupupunis.epizy.com/daily_spending_excel_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebb9.bin
8f8063830b78f6834e9cfa7cb5ad53bb8367971c1b70691e2245c44df189a19f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB9 5500 bytes
font_01_sfnt_off0000fe6d.bin
65e29815e367172d51f9f5cb831770c8422db2cb65e2a596f4f26cafc57b369b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6D 10096 bytes
font_02_sfnt_off000120ef.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120EF 4324 bytes

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