Malicious PDF — malware analysis report

Static analysis result for SHA-256 35685f76a22d0fc0…

MALICIOUS

PDF

45.5 KB Created: 2020-08-21 00:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 275bf0cdcb8988e4ebf00baf8b22a854 SHA-1: f05a5a6bd9c84219fe22b3df83cfdd0929295619 SHA-256: 35685f76a22d0fc0951b712f9505728cfda6cb5095c4599ed3837f88675e3972
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic indicates the PDF links to a known malicious redirector, 'ttraff.ru', which likely serves as a gateway to further malicious content. Another heuristic identified a 'PDF SEO Link Farm', suggesting the document's primary purpose is to host a large number of external links, many of which point to other PDFs on Shopify domains. The document body contains garbled text but includes the 'ttraff.ru' URL, reinforcing its role in the redirection chain. No scripts were extracted from this sample.

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=ainun+dan+habibie In PDF document text
    • http://girile.tollyho.com/uploads/1/3/1/4/131437079/7087306.pdfIn PDF document text
    • http://files.executived-daytours.com/uploads/1/3/1/8/131871704/a85c9f84ba.pdfIn PDF document text
    • http://belifemif.forwhatitsearthproject.com/uploads/1/3/1/6/131637649/f15fd8a80ae7.pdfIn PDF document text
    • http://duteb.myregionals.com/uploads/1/3/1/6/131606227/vulitobul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/34123669379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6848/4758/files/libro_numerologia_tantrica_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0611/3430/files/vumelipigatufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/56675003189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9321/3855/files/81779074317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4993/4231/files/33219174180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3658/0759/files/rejibumexaxo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C7 4428 bytes
SHA-256: d5d352f0101243264c87b13a6bcf5c8dfcd016cfdb9a11b52e468e8ee32bf142
font_01_sfnt_off000077ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77AD 10548 bytes
SHA-256: e156fd8ee3f4f02b27183b14fe0607b88aaca136ea8b030997b3c247cb519c1b
font_02_sfnt_off00009bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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