Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d178192984ab002…

MALICIOUS

PDF

73.2 KB Created: 2020-12-25 10:10:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b991bd3ec7e23e0589d4cbe5a1382fc2 SHA-1: 773aa6997d57d1f4c3137b755bf251f270d7a5f1 SHA-256: 7d178192984ab002819dcac3cf6014bf8c28a8bb15de4e9e7f659fadb4cdbf9d
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or credential harvesting attempt. The embedded URL, 'https://ggtraff.ru/123?utm_term=information+assurance+fundamentals+test+answers', is the primary indicator of this malicious intent. The ML classifier and ClamAV detection further support the malicious nature of this file, classifying it as a phishing trojan.

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
  • 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.
  • 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://ggtraff.ru/123?utm_term=information+assurance+fundamentals+test+answers In PDF document text
    • https://cdn.sqhk.co/rogotojuseb/ijfLwQl/ted_bundy_movie_cast_netflix.pdfIn PDF document text
    • https://ximewenidurap.weebly.com/uploads/1/3/4/6/134651426/5279003.pdfIn PDF document text
    • https://cdn.sqhk.co/melukate/je1ij5X/mexemowetixaludotomujimor.pdfIn PDF document text
    • https://cdn.sqhk.co/supuzeren/cjiphgN/mazel_tov_wedding_song.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/gamiwaparilej_xujakapikuva.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/degagaziv/dojigadetezinak.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/41222530734.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/ruxuvorobakigasuvutazifa.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/thermal_insulators_and_conductors_ks2_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/riparugem.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/pokemajanemamulo.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/free_cbt_worksheets_for_autism.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_off0000e2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CE 5196 bytes
SHA-256: 2ee0e8fe90fb7bcaa5ccb86d707cd4f90ceaa4aa5635841367d61a32fdac60c9
font_01_sfnt_off0000f473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF473 10368 bytes
SHA-256: a29858b8d83dbabb042f29de391c23058bfce06fcde8bdc38e0d16c4122cea89

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