Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cfe39c24cfefc41…

MALICIOUS

PDF

36.8 KB Created: 2020-07-27 21:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09f07c3278115d02a40b192d48379bd9 SHA-1: 80376166d563f756596b1117235733a2de00037f SHA-256: 6cfe39c24cfefc414c1f1ab5a4b9e240e2a934f5b84e38825118703f5143c0f1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious redirection and a link farm. Specifically, it links to a known malicious redirector at 'ttraff.com' and hosts numerous other PDF links, likely to manipulate search engine results or phish users. The ML classifier also strongly flagged this PDF as malicious.

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=dumbfounded+2+answers In PDF document text
    • http://files.theworkwithsarahmaya.com/uploads/1/3/2/6/132696174/d055331cd.pdfIn PDF document text
    • http://files.teachconnected.com/uploads/1/3/2/7/132740614/2838634.pdfIn PDF document text
    • http://files.hotmilkbreastfeeding.com/uploads/1/3/1/4/131409526/a4b8035a24734.pdfIn PDF document text
    • http://files.honordaypasco.org/uploads/1/3/2/6/132682826/6793525.pdfIn PDF document text
    • http://files.horoscopesbyvivian.com/uploads/1/3/1/8/131856883/2911955.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/1/0433/0291/2168/files/penewitubaniwadesorabonuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2786/4469/files/xefukogaguwafatogijibadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6998/7223/files/65862260334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0729/6163/files/setepirulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2912/6550/files/28153777009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/81760356886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/musunep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6099/9830/files/64278289502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/39038173843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4936/9252/files/tafunadamosej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7218/4732/files/putizubozan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7287/8747/files/88363710046.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_off00005630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5630 5140 bytes
SHA-256: 12d686bf8733b553896d469c04008c21187b000f12afc4eeeca37b28e80651a9
font_01_sfnt_off00006793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6793 8972 bytes
SHA-256: f66caba21b3de2bf31ce729ff64f2d22f6a2d8bcd93051ff12b6b0d048dd8b82

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