Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29729720a1f974d…

MALICIOUS

PDF

37.8 KB Created: 2020-08-20 00:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e50b833afc0b09cb65aa2bd53eba95fc SHA-1: e203662cc3a29c2445b1f0702b2b92963185835f SHA-256: f29729720a1f974d24fa65290839216e8e26ba02de89ccede647f5d1585f3500
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for containing a malicious redirector link. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the URL 'https://ttraff.ru/pify?keyword=indesign+report+layout', which is likely used to lure users to a harmful destination. No scripts were extracted, but the presence of a malicious link is sufficient evidence of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.ru/pify?keyword=indesign+report+layout
    • http://files.blazindancefitness.com/uploads/1/3/1/4/131483083/mavojavos.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/44732358612.pdf
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/gexizik.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/xogaxemifofarapegixakude.pdf
    • https://cdn.shopify.com/s/files/1/0434/5036/8152/files/34368934141.pdf
    • https://cdn.shopify.com/s/files/1/0432/4956/5853/files/medical_terminology_for_spanish_interpreters.pdf
    • https://cdn.shopify.com/s/files/1/0434/1350/4150/files/wujuwerotex.pdf
    • https://cdn.shopify.com/s/files/1/0437/7804/8161/files/39846312480.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005831.bin
c074d58a4f17c0f5ced80562e1b88fb6e78bd5c96978af347a27acfb75870acf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5831 5168 bytes
font_01_sfnt_off000069c8.bin
65022a5f05a02de20ff2304af4a7348b9207bb12ff01e72098029d88315f04e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C8 9808 bytes

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