Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ebcade482f40b3…

MALICIOUS

PDF

42.0 KB Created: 2020-08-10 04:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 642c1e914faffdd5ae9f9b9dc81fc2f5 SHA-1: ab519bc03484a2f29361d4a2c9ef4cde4278b848 SHA-256: 97ebcade482f40b3004be5ccbd9fe372eefe89f0316db9408b182369ca9bdb05
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique commonly used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=samuele+bacchiocchi+from+sabbath+to+sunday+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to lure users to this 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=samuele+bacchiocchi+from+sabbath+to+sunday+pdf
    • http://files.c2lconference.com/uploads/1/3/1/4/131453897/gugadelug_gilodajol.pdf
    • http://magevu.loveyouridlife.com/uploads/1/3/0/7/130775403/30553e655.pdf
    • http://files.ylrart.com/uploads/1/3/0/9/130969628/e9bfa4.pdf
    • https://cdn.shopify.com/s/files/1/0433/2411/3049/files/tuvawumejusubapad.pdf
    • https://cdn.shopify.com/s/files/1/0435/3005/9927/files/74953785205.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/cg_b._ed_syllabus_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/xapegufodefox.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/96714748765.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/potafanoki.pdf
    • https://cdn.shopify.com/s/files/1/0452/4245/0081/files/zixibeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/55852591956.pdf
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/prioritized_experience_replay.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/bopefatemaxodod.pdf
    • https://cdn.shopify.com/s/files/1/0437/3577/7445/files/reasons_of_stress.pdf
    • https://cdn.shopify.com/s/files/1/0438/5924/7264/files/luxid.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_off0000645f.bin
bbfb171c6641eb81ae4792b70175b3c3180c7db61844dfdd1ad2243590ae8a1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x645F 5740 bytes
font_01_sfnt_off000077c6.bin
d0498db87d76c88dfe5f0a9644f99486c859f8f17bb088e7e95c9c49b7d1f6e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C6 10308 bytes

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