Malicious PDF — malware analysis report

Static analysis result for SHA-256 c72dc12c2f93202a…

MALICIOUS

PDF

45.7 KB Created: 2020-08-08 23:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b46434f642029864977e43435d44b33 SHA-1: ddf32d771be022208081071b30dce3ae3b2d180f SHA-256: c72dc12c2f93202ab6fafdd197854be55d28d815a3d1d7faae5c1e7b64873853
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external links, suggesting a link farm or phishing lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=consecutive+interpreting+pdf. While no scripts were extracted, the presence of numerous links points towards an attempt to direct users to potentially harmful external resources. The document body contains garbled text and embedded URLs, reinforcing the link-based attack vector.

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=consecutive+interpreting+pdf
    • http://files.asa-dc.org/uploads/1/3/0/8/130813988/lukunesimugij.pdf
    • http://files.cbaannualmeeting.com/uploads/1/3/1/3/131398540/kataguwosor.pdf
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdf
    • http://files.holytemplec.org/uploads/1/3/1/4/131453598/zaxopoxudito_mogogodabuga.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8389/files/72605259668.pdf
    • https://cdn.shopify.com/s/files/1/0430/0986/7929/files/72840845121.pdf
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/8_week_muscle_building_workout_plan.pdf
    • https://cdn.shopify.com/s/files/1/0431/6718/7108/files/stewart_calculus_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/51952001537.pdf
    • https://cdn.shopify.com/s/files/1/0428/3881/8982/files/79722188267.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/senaxowuxam.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8969/files/linear_and_nonlinear_functional_analysis_with_applications_ciarlet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/83692207.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_off000066ed.bin
3887010f3b008b682dedb15ca43be6bfa3bfdb46b6f1d5563d95e671b8b25ccb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66ED 5044 bytes
font_01_sfnt_off0000782d.bin
d7892a414be154b61f6ee7f1eab3d81aee10f915070785329c8eeeafb2a7a992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x782D 10432 bytes
font_02_sfnt_off00009bc8.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC8 4324 bytes

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