Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00f5a9d3f62ba94…

MALICIOUS

PDF

44.9 KB Created: 2020-08-14 10:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a2ed14760aba7fc68a5c419b9964850 SHA-1: a0a52117df48d663b2fbdb54bc4bffc560d0c873 SHA-256: d00f5a9d3f62ba9410aa6042b8b2f7d5177bf1566daba1e8911da6d54835d4ae
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.ru/wb?keyword=suffragette%20movie%20script%20pdf`. The document body, though heavily obfuscated, contains references to 'movie script pdf' and the authoring application 'wkhtmltopdf', indicating a lure to disguise malicious content. The presence of numerous unknown URLs further supports the malicious intent.

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.
  • 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.
  • 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/wb?keyword=suffragette%20movie%20script%20pdf
    • http://rofenawik.jeannekipke.com/uploads/1/3/0/7/130739061/wuminarir-soxasomada-nuxax.pdf
    • http://witugox.stardisc.co.uk/uploads/1/3/0/8/130874284/basiputala-zulesorum-wuzis-xelewisuwekaxu.pdf
    • http://files.healguyana.org/uploads/1/3/1/3/131398022/boropagidagitiv.pdf
    • http://kabinupen.teachergoals.org/uploads/1/3/1/0/131070331/2e3d085.pdf
    • http://files.niagarasuicidepreventioncoalition.com/uploads/1/3/1/6/131636772/wibekuruwemumok-jewesogepefagi.pdf
    • https://cdn.shopify.com/s/files/1/0447/4611/3173/files/sir_arthur_conan_doyle_sherlock_holmes.pdf
    • https://cdn.shopify.com/s/files/1/0429/3197/8403/files/89890726750.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/92957628700.pdf
    • https://cdn.shopify.com/s/files/1/0447/8281/3341/files/free_download_math_books_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/banumabirigemetiwinivixij.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/86105184650.pdf
    • https://cdn.shopify.com/s/files/1/0451/5568/0410/files/rate_analysis_for_brick_masonry.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9164/files/critical_thinking_questions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69262577592.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5754/files/mamezaluwajigipenizubive.pdf
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/algebra_moderna_birkhoff_maclane.pdf
    • https://cdn.shopify.com/s/files/1/0441/0517/1096/files/aletha_solter_tears_and_tantrums.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_off00006f94.bin
83beb996d275fbac1073eacafa87fa3b3ddf795bd6855efd20e0afc05e314d82
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F94 5608 bytes
font_01_sfnt_off0000829b.bin
8b7f75f74f350dc3f8ae044c08e0d3f2301e5203be0aaf003330bb600dec1d02
pdf-font-stream PDF embedded font (sfnt) at offset 0x829B 10680 bytes