Malicious PDF — malware analysis report

Static analysis result for SHA-256 042290f8014d7aeb…

MALICIOUS

PDF

37.9 KB Created: 2020-08-28 05:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f5b8fc1be086e2782ac3937af518be5 SHA-1: 3fefd67afde68defa2606c16236c4f20dc6ee27e SHA-256: 042290f8014d7aeb11adb1da7d05c54510b7b55d6d9ce3769f6c7075d09ccdf1
154 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically advertising an "8 ball pool hack". The primary malicious URL identified is https://ttraff.ru/pify?keyword=8+ball+pool+hack+unlimited+coins+and+cash+apk+download, which is flagged as a known redirector. The document's structure and embedded links suggest a phishing or scam attempt to lure users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=8+ball+pool+hack+unlimited+coins+and+cash+apk+download
    • http://files.kerryhawkinsphotography.com/uploads/1/3/1/4/131437685/rasopus.pdf
    • http://files.waymoretrans.com/uploads/1/3/0/9/130969220/pubog_bajoponuru.pdf
    • http://files.defeet.org/uploads/1/3/2/7/132740361/9411268.pdf
    • http://ganuzoveg.musicwithmskrauss.com/uploads/1/3/2/6/132696483/9835991.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0430/5303/files/40922179608.pdf
    • https://cdn.shopify.com/s/files/1/0436/9966/7099/files/best_greatest_weakness_answers.pdf
    • https://cdn.shopify.com/s/files/1/0443/6908/4572/files/tunivifemiwavolegapola.pdf
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/38910662895.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/46386852017.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/2599786176.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/nobody_denim_jeans_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0141/files/pibiwu.pdf
    • https://cdn.shopify.com/s/files/1/0440/0090/3318/files/gatutenemuwavavav.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055b6.bin
5f9ea65955bbd661bf673fd3796093606bba7f3f40446531464eeec6a8904e38
pdf-font-stream PDF embedded font (sfnt) at offset 0x55B6 5612 bytes
font_01_sfnt_off0000689f.bin
b6f410dc6a6d1e040234248ca4f7cc688267946693aff10ca9ecbb3f30e0166f
pdf-font-stream PDF embedded font (sfnt) at offset 0x689F 9940 bytes