Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9181a5f03599874…

MALICIOUS

PDF

43.1 KB Created: 2020-08-09 08:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1d25c6686bb049cf858fb518147fb2e SHA-1: 3afe8bd2a4255736326cf473226771ab2fb4f8ce SHA-256: a9181a5f035998747998cb01b649a90e003b836801737f0723ea6c961b2e8294
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=inflammatory+bowel+disease+diet+pdf'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same lure text and the malicious redirector URL, suggesting a phishing attempt to drive traffic to potentially malicious content.

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.com/pify?keyword=inflammatory+bowel+disease+diet+pdf In PDF document text
    • http://files.jacobs-midcentmod.com/uploads/1/3/1/0/131069899/mubedulili.pdfIn PDF document text
    • http://zirinoze.kaitlinhennessyart.com/uploads/1/3/2/6/132695569/654871.pdfIn PDF document text
    • http://ragunam.mvkofcclubinc.org/uploads/1/3/0/7/130776486/goximolejinifux-sobadivo-nevusutagomo-renerevibexe.pdfIn PDF document text
    • http://files.emergingaging.com/uploads/1/3/0/7/130775953/nexewul.pdfIn PDF document text
    • http://files.owlingdog.com/uploads/1/3/1/0/131070792/1837627.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/1/0431/4018/6268/files/engineering_design_dieter_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8905/8209/files/40401023457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2341/4942/files/moldes_fofuchas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6636/6869/files/adosphere_cahier_d_activits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2646/3392/files/67507525635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8099/1395/files/jifuwawitexopifewabivupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/93307633637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0008/5160/files/lefulamusekakojur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/nowonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2269/9943/files/53362328271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/votupedajajok.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 4

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_off00006b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B33 5456 bytes
SHA-256: 53164790d1821b466b3e2c0e9d1acbf61cfafe7fd1c4975c7052f9d08130c5ba
font_01_sfnt_off00007dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBF 10016 bytes
SHA-256: dc1f1e0a65fddadcd8fb6282910c2b1a1d30b3dcbf84caeb25c6933b58905c65

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