Malicious PDF — malware analysis report

Static analysis result for SHA-256 50c0f2ea15fc54a6…

MALICIOUS

PDF

52.0 KB Created: 2020-08-24 07:11:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c9ccad0281ff71bb26bdaff2ec9cad4 SHA-1: b8ebc0e405cbc6ba4503e8d998e6b551fc715011 SHA-256: 50c0f2ea15fc54a6f166577bcaf9fb0f010f8757dc579d0bf41ee06b01c6c56a
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One critical heuristic identifies a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination and potentially deliver malicious payloads. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing its role in a redirection scheme. The presence of many Shopify-hosted PDF links suggests an attempt to leverage legitimate platforms for SEO poisoning or to host a large number of lures.

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.cc/pify?keyword=dragonfable+storyline+quest+guide
    • http://kekaw.lindsaydiabetesproject.com/uploads/1/3/1/4/131437736/5836089.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2740/6746/files/drive_safe_save_app_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/gross_anatomy_of_digestive_system.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/20447619990.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/essential_english_grammar_in_use_supplementary_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15750122344.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8216/files/92206972991.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/bijugixasajokojezoxuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/8594/5246/files/cfot_exam_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6561/files/vewiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/intermediate_accounting_study_guide.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_off00008da0.bin
9a238332dcd2e6f69f48f3ac33a9e924edcbd8519c62839b04c0b6f8169ffcd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA0 5444 bytes
font_01_sfnt_off0000a02a.bin
dfd4d7f149517254d2b3a168d2c1cf5634e7cfda64bc03af8ed84da42b231465		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA02A 10192 bytes

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