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) First seen: 2026-05-09
MD5: 9ecd29a6d9141333b3b58b09201322ac SHA-1: 66c61a7ea6ced0bbadfe6c63b3ab4ae9db44760b SHA-256: 966e21a376884ebde5337ae33c89fc8244c41e24bfa23e5b87f8665b01360536
214 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.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 In PDF document text
    • http://files.lexmarch.ca/uploads/1/3/0/8/130814874/15a454534786de3.pdfIn PDF document text
    • http://files.1stshiplake.org/uploads/1/3/1/3/131384081/pavukutumade_xozebasibi.pdfIn PDF document text
    • http://files.sweptpath.com/uploads/1/3/1/0/131069899/namuvewokerabak-sobowetola.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2586/4603/files/chinese_english_visual_bilingual_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9586/6010/files/7202830998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/airdrop_like_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/63753926442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/biology_vocabulary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/97642145300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3507/4465/files/wosejupotuwokosazitinome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/xutukotevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/83229262572.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000636b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636B 4068 bytes
SHA-256: b1a451cff498dc0e23f17d73448b8c854ee84d019d558487becbfba3524b9423
font_01_sfnt_off000071e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E4 5076 bytes
SHA-256: daa778675893f891caf87c46be3f1d2a599c63f5afb16a740d5cb21371a02a41
font_02_sfnt_off00008316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8316 10824 bytes
SHA-256: f7c1dbf8d1b41a06700984e7ff07462df5f4a2d1b5515a017d3fe238150627c1

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