Malicious PDF — malware analysis report

Static analysis result for SHA-256 5951a1c1aca357ac…

MALICIOUS

PDF

35.3 KB Created: 2020-08-15 16:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 747ba2a8149d897f2a8c1a5ddd39ea36 SHA-1: 835363cc6b63f1e827c443886ff4045c0bd1d5f1 SHA-256: 5951a1c1aca357acfecffadeda0886f8e89ea548a075672b050fc26dabd2f1bb
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=maryland+magisterial+docket+sheets'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0428/0749/2775/files/gonaxorob.pdf' being the first identified. The document body, though heavily obfuscated, contains text related to 'Maryland magisterial docket sheets' and the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=maryland+magisterial+docket+sheets In PDF document text
    • http://files.airsampler.net/uploads/1/3/0/9/130969390/nuxexezek_tamirezel_bobuxigiso.pdfIn PDF document text
    • http://files.francoisdesign.com/uploads/1/3/1/6/131606674/1b188ce7defe.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/1/0428/0749/2775/files/gonaxorob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/gakejuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/tofuvizepidatogifami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4532/9832/files/3862099753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3080/5653/files/bobcat_snow_plows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0885/0081/files/definition_of_bureaucracy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6894/7616/files/nufukivoxerurijejixal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7367/files/50748991978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/64027601323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2076/0741/files/blitzkrieg_bop_meaning.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 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD6 5524 bytes
SHA-256: 660b62652f0c4a3d6bc146f4034b9ed7a3db7dda2d2b46bb837f3c16d1cbc319
font_01_sfnt_off00005e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E79 10060 bytes
SHA-256: 4141528c31746d21fc275e2e9437cf706775b33828dd461d3c021c3cc23f9463

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