Malicious PDF — malware analysis report

Static analysis result for SHA-256 14152dcd4d15ce06…

MALICIOUS

PDF

72.1 KB Created: 2021-01-18 08:34:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 041e8c4974ff7643ec46a7479b30802b SHA-1: 77796c163fea1ea983e5392756790751dfa079e7 SHA-256: 14152dcd4d15ce063fd7d69d1e6a7f43aab22c5d3e2e83c5c1a78406561ed9dc
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/123?utm_term=full+block+style+complaint+letter+template'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, aligning with phishing or malware delivery tactics.

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://traffking.ru/123?utm_term=full+block+style+complaint+letter+template In PDF document text
    • https://static.s123-cdn-static.com/uploads/4489733/normal_5feb0dc2924b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451210/normal_5fc7ecb5f0510.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412761/normal_5fcb4ac9457bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411714/normal_5fff7be0a7b44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373985/normal_5fba4f8baee94.pdfIn PDF document text
    • https://site-1174552.mozfiles.com/files/1174552/suzewugavozamizeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388428/normal_5f908c8dd0bab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446394/normal_5fd059ad29729.pdfIn PDF document text
    • https://cdn.sqhk.co/savaketiju/jamVyhg/menodemutisaru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458614/normal_5fca76e8b5a95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370780/normal_5fc96a4c284c7.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/legobegutulo/tamilrockers_hd_movie_tamil_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/fuviwomuzakolupotoje.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/game_hungry_dragon_mod_apk_rexdl.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_off0000dc7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7D 5340 bytes
SHA-256: 71d82c8ed47dbec864cb6df45cc5fee6afad70c476336f8b49a81d60e3067967
font_01_sfnt_off0000ee9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9B 10684 bytes
SHA-256: 415db65bdd9803d541bf925833e6cda36a0f1eed1ff41c381b22d23fcaa9da8f

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