Malicious PDF — malware analysis report

Static analysis result for SHA-256 f27e28b1fc3089fb…

MALICIOUS

PDF

53.2 KB Created: 2020-08-20 09:19:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8eb4b1d0dfa105a45cb89305ee831ccd SHA-1: 2383bf87d883538428a5a55ed5ecb85e9d0ac8a7 SHA-256: f27e28b1fc3089fbcaf819f8895f5d954743b4b1c05e59974b6e9c39cf2f9587
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary intent appears to be luring the user to the malicious redirector.

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=wwe+raw+finn+balor+song
    • http://files.brendasbrushstrokesandbisque.com/uploads/1/3/1/6/131606492/fijelumadafonuran.pdf
    • http://bigidotaf.ramanava.com/uploads/1/3/0/9/130969744/dbcf3.pdf
    • http://files.eatwithjames.com/uploads/1/3/0/7/130739143/bf906026.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/65981991612.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34803766861.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/42599932412.pdf
    • https://cdn.shopify.com/s/files/1/0451/0233/4104/files/blood_red_skies_rules.pdf
    • https://cdn.shopify.com/s/files/1/0428/7696/0924/files/xulikepopatego.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/apa_manual_7th_edition_release_date.pdf
    • https://cdn.shopify.com/s/files/1/0433/4832/8603/files/33632671077.pdf
    • https://cdn.shopify.com/s/files/1/0431/7095/5424/files/63013546833.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65760981278.pdf
    • https://cdn.shopify.com/s/files/1/0432/7007/8617/files/ars_amatoria_italiano.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000871f.bin
4244a22cf6b4f33bb3f3f5d69342bcb1f6ddcd58cb860f6d4c45f7b916d49aba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x871F 4888 bytes
font_01_sfnt_off000097d5.bin
2003f6735add0d7f7d1fc9c2f7a79cb5591add782205cd9547bce327dd7c13ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97D5 9956 bytes
font_02_sfnt_off0000b9db.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DB 4324 bytes

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