Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e009524c91ad25…

MALICIOUS

PDF

36.2 KB Created: 2020-08-18 16:16:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f672a4a6d5b0324704db84b8b99b243 SHA-1: bb8f5bd25a1e33037cd153f808bf34124b1f44dd SHA-256: f3e009524c91ad25e5079224c34bed09d45281edaa8fcad9fd5866a54dbcb5c1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was identified as malicious due to its inclusion of a link farm containing numerous external links. One of these links, 'https://ttraff.ru/pify?keyword=allu+arjun+movie+all+songs', points to known malicious redirector infrastructure. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it was likely created programmatically to host these links.

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/pify?keyword=allu+arjun+movie+all+songs
    • http://files.wadesfarmtoplate.com/uploads/1/3/0/8/130814682/takawabupa-barobemika.pdf
    • http://files.cnycommunityacu.com/uploads/1/3/0/7/130740298/27628d903.pdf
    • http://files.lynnereeder.com/uploads/1/3/1/4/131453061/jikuj.pdf
    • http://files.democraticclassrooms.com/uploads/1/3/1/3/131398392/9223995.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3674/files/case_files_family_medicine_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/lawewofizupogipojux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3199/3242/files/idsa_guidelines_acute_diarrhea.pdf
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/vizolapeponalamawe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8525/0216/files/43435008532.pdf
    • https://cdn.shopify.com/s/files/1/0437/9977/3341/files/transformer_un_garage_en_atelier_d_artiste.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/ffxiii_2_trophy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/57247179855.pdf
    • https://cdn.shopify.com/s/files/1/0437/5520/8858/files/nalut.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0843/files/boldly_i_approach_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0438/5875/5749/files/arm_risc_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/types_of_antonyms.pdf
    • https://cdn.shopify.com/s/files/1/0432/3069/1496/files/32500574425.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_off000050f3.bin
138ceb7e89411b3e064bf14ee1e76e9a46cf2e41ef0f66422bbc37dd2498bd25
pdf-font-stream PDF embedded font (sfnt) at offset 0x50F3 5132 bytes
font_01_sfnt_off00006254.bin
8d201d2d5bb7af6c789ff0630b76633981a795be63ba5edce3f9517835cfb0a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 9868 bytes