Malicious PDF — malware analysis report

Static analysis result for SHA-256 f337611d2f6446e2…

MALICIOUS

PDF

57.9 KB Created: 2020-08-10 23:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95c4d61b3cf9d826d82cfe233daa7ebb SHA-1: 49a49ac62b6916471c1a7fdde387e529fd22e163 SHA-256: f337611d2f6446e209d9c328c5b589fd51008acc67d7fc4c9c4fbb1708ef1383
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a link to a swimming technique PDF. The PDF also contains a large number of external links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, reinforcing the lure. No scripts were extracted, but the presence of a malicious redirector and the SEO link farm heuristic strongly indicate a phishing or malicious redirection attempt.

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=breaststroke+swimming+technique+pdf
    • http://files.brunswicktravelbasketball.com/uploads/1/3/1/4/131454034/gabewoki.pdf
    • http://zuxopuxip.sailingandcruisingni.com/uploads/1/3/0/7/130776330/55727.pdf
    • http://tezina.augustf.com/uploads/1/3/1/0/131070872/dapoj.pdf
    • http://files.brunswicktravelbasketball
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/membrane_proteins_and_their_functions.pdf
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/75702533054.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/40341599445.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/32047900474.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/48880363746.pdf
    • https://cdn.shopify.com/s/files/1/0447/8792/5143/files/exercicios_de_atomistica.pdf
    • https://cdn.shopify.com/s/files/1/0433/4406/8773/files/repovoninalajewo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9273/files/favamadilapat.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2960/files/73179454396.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/63253739191.pdf
    • https://cdn.shopify.com/s/files/1/0433/6330/3575/files/14542380083.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/65488760102.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_off000096d0.bin
82f7f69d463297bd53359fcf47e14c04a0ad30192475bdab9a9d0fa640e7c08f
pdf-font-stream PDF embedded font (sfnt) at offset 0x96D0 5752 bytes
font_01_sfnt_off0000aa44.bin
84e8108232a951cd67cac66b5e5954006fae24a07e30b666689f3a7aa82a5cd9
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA44 9908 bytes
font_02_sfnt_off0000cc26.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC26 4324 bytes