Malicious PDF — malware analysis report

Static analysis result for SHA-256 3141d45bf7b6a8ec…

MALICIOUS

PDF

46.2 KB Created: 2020-08-06 13:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83474dc9ce82f066a3e4caa680fdfc3b SHA-1: 0d9768f4abce3618acc4b49c91ed7a5561655666 SHA-256: 3141d45bf7b6a8ec39b39d948bf5ea74a115c183fae4bfbaf5ec47771228b552
120 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics, suggesting a lure to download further content or redirect to a malicious site. The presence of numerous links, including those hosted on Shopify, indicates an attempt to create a link farm for SEO poisoning or to disguise malicious links among benign ones.

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=ankle+sprain+home+exercise+program+pdf
    • http://files.markvillemassage.com/uploads/1/3/1/4/131437139/zafotozez.pdf
    • http://files.growwithmehomechildcare.com/uploads/1/3/1/4/131406744/finigan_xaputovatixabi_fiwexo.pdf
    • http://files.ontherun.us/uploads/1/3/1/6/131606109/b5296ce51c34d54.pdf
    • http://files.profe-h.com/uploads/1/3/1/8/131857758/nasitonunif.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/chronicle_of_a_death_foretold_full_text.pdf
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/54116645213.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/zafovefuvib.pdf
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/91228228587.pdf
    • https://cdn.shopify.com/s/files/1/0429/2208/2460/files/123156922.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/4018217028.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6298/files/82243304018.pdf
    • https://cdn.shopify.com/s/files/1/0429/9833/3599/files/bissell_proheat_2x_pet_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/33997886950.pdf
    • https://cdn.shopify.com/s/files/1/0436/8603/5621/files/shakespearean_sonnets.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8387/files/dupabebakudaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/87202924055.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0302/files/16511156354.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_off000074cb.bin
d212c44ad049106ea12877ce4fe6f45169053195af521c2064ce51e78edfb048
pdf-font-stream PDF embedded font (sfnt) at offset 0x74CB 5688 bytes
font_01_sfnt_off0000880a.bin
6d41e9f9ac41d44f29074af9aea8e8a6ef5768da91dc3f257662f07b30df6b63
pdf-font-stream PDF embedded font (sfnt) at offset 0x880A 10484 bytes