Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad1afb57cd963fc…

MALICIOUS

PDF

37.5 KB Created: 2020-10-05 00:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fdf77d0365db93ad57f0f8d12518c87c SHA-1: e13a3083e28c3e20f1bc56811e43274d297a5bf5 SHA-256: 6ad1afb57cd963fc50b3ff2500546ad09c30119a86d903e7c7449b146ffaf23d
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically `https://ttraff.club/pify?keyword=impossible+quiz+answers+question+56`. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest a pattern of hosting further malicious PDFs, likely as part of a phishing or malware distribution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.club/pify?keyword=impossible+quiz+answers+question+56 In PDF document text
    • http://dexop.ueamun.org/uploads/1/3/0/8/130874038/pupidusanufot.pdfIn PDF document text
    • http://wokegobuw.libertyrecbc.com/uploads/1/3/0/9/130969060/midixepepika.pdfIn PDF document text
    • http://molexu.rareapricotsociety.org/uploads/1/3/1/3/131380868/tijedagitixuvosijoki.pdfIn PDF document text
    • https://site-1038597.mozfiles.com/files/1038597/xilugiromuziw.pdfIn PDF document text
    • https://site-1037883.mozfiles.com/files/1037883/mipevujuvonisefuvoj.pdfIn PDF document text
    • http://files.katecolvin.com/uploads/1/3/2/8/132815752/devufe.pdfIn PDF document text
    • http://wovunenib.theosisresources.org/uploads/1/3/2/6/132681144/wuvexigin-luzasufomom.pdfIn PDF document text
    • http://files.tfcweldcounty.com/uploads/1/3/0/7/130738553/junedinivotubivom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8958/3514/files/15929500562.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_off000052d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52D4 5588 bytes
SHA-256: e59f5da3639ba595515c438f96f893894561f48d449f334cb7ded1a89457366d
font_01_sfnt_off000065da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DA 10488 bytes
SHA-256: 2db9eb209158d5b8df4d19205de079ed116d908c1fa2d8ef280cd545198cf41a

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