Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bb7e35466aa6a27…

MALICIOUS

PDF

44.9 KB Created: 2020-08-18 13:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4493513afb15d7d656a585a2606c4191 SHA-1: c443f7e07648d1a4e52bf194e34692d44e858791 SHA-256: 4bb7e35466aa6a27b3fd67e232e927836f5bd74c2c6187562177d628802a2f04
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as a nutritional guide. This redirector is likely used to lead the user to a malicious site or download further malware. The document also contains a large number of embedded links, many pointing to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for 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.cc/pify?keyword=nutritional+guidelines+for+one+year+old In PDF document text
    • http://pipuse.mtbo-sui.com/uploads/1/3/2/6/132682076/9dbd3ac4.pdfIn PDF document text
    • http://tanabi.newhopemovement.org/uploads/1/3/1/4/131407089/gejuzetarege.pdfIn PDF document text
    • http://files.johnknoxhouston.org/uploads/1/3/0/7/130740049/xuloko.pdfIn PDF document text
    • http://files.ekmcreative.org/uploads/1/3/0/7/130775747/lesefutakuzikuv.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/1/0434/1478/2103/files/pukiguxokidutase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/64421369084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/8467660630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/adding_and_subtracting_rational_expressions_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/61792424166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/22878497360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0654/0445/files/new_pan_application_form_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3297/3205/files/84016019326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/artist_bio_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/56581804899.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 5

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_off0000711a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711A 5148 bytes
SHA-256: 180822fa9530a25e0e46c093e6f217d5a984132e650220200d3f6bf55be9a87c
font_01_sfnt_off000082b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B4 10628 bytes
SHA-256: 8aadefe3268aec14fca61489dc4b1b2b0e73e9df95d1d53a22bc201182f136b6

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