Malicious PDF — malware analysis report

Static analysis result for SHA-256 966e21a376884ebd…

MALICIOUS

PDF

45.2 KB Created: 2020-08-21 04:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ecd29a6d9141333b3b58b09201322ac SHA-1: 66c61a7ea6ced0bbadfe6c63b3ab4ae9db44760b SHA-256: 966e21a376884ebde5337ae33c89fc8244c41e24bfa23e5b87f8665b01360536
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=pt1000+sensor+datasheet'. Additionally, it exhibits a PDF link farm pattern, with multiple links hosted on cdn.shopify.com, suggesting an attempt to obscure the final malicious destination. The document body, though heavily obfuscated, also contains the primary malicious URL. The presence of a callback phishing lure heuristic further supports the malicious intent.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=pt1000+sensor+datasheet
    • http://files.lexmarch.ca/uploads/1/3/0/8/130814874/15a454534786de3.pdf
    • http://files.1stshiplake.org/uploads/1/3/1/3/131384081/pavukutumade_xozebasibi.pdf
    • http://files.sweptpath.com/uploads/1/3/1/0/131069899/namuvewokerabak-sobowetola.pdf
    • https://cdn.shopify.com/s/files/1/0439/2586/4603/files/chinese_english_visual_bilingual_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0436/9586/6010/files/7202830998.pdf
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/airdrop_like_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/63753926442.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/biology_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/97642145300.pdf
    • https://cdn.shopify.com/s/files/1/0431/3507/4465/files/wosejupotuwokosazitinome.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/xutukotevo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/83229262572.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/
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/83229262572.p

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000636b.bin
b1a451cff498dc0e23f17d73448b8c854ee84d019d558487becbfba3524b9423
pdf-font-stream PDF embedded font (sfnt) at offset 0x636B 4068 bytes
font_01_sfnt_off000071e4.bin
daa778675893f891caf87c46be3f1d2a599c63f5afb16a740d5cb21371a02a41
pdf-font-stream PDF embedded font (sfnt) at offset 0x71E4 5076 bytes
font_02_sfnt_off00008316.bin
f7c1dbf8d1b41a06700984e7ff07462df5f4a2d1b5515a017d3fe238150627c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8316 10824 bytes