Malicious PDF — malware analysis report

Static analysis result for SHA-256 fefe3498025a2d9b…

MALICIOUS

PDF

46.7 KB Created: 2020-09-12 01:05:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8271834de521b3d2e3256d7ae58f7556 SHA-1: dfb02b24e617feb0d570e6ac316d1f17d6a0478f SHA-256: fefe3498025a2d9b68b65f47ff36f125898ed2409542db2d32eb73804083d786
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which are part of a link farm strategy, with a notable portion pointing to Shopify-hosted PDFs. One critical heuristic identified a link to a known malicious redirector at 'ttraff.club', which is likely the primary malicious payload delivery mechanism. The document body itself contains obfuscated text and a URL that mirrors the malicious redirector, suggesting an attempt to lure users to 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.club/wix?keyword=teachers+guide+science+8+digestive+system In PDF document text
    • http://files.salondiversions.com/uploads/1/3/2/6/132681201/11eb9746d2eb6.pdfIn PDF document text
    • http://files.stmarymagdalenelangridge.com/uploads/1/3/0/7/130738823/lutajepiwinug.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/1/0437/7581/9927/files/kituji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/niveribe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/64114648250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4500/3169/files/nilibimubobage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/fahrenheit_451_graphic_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8557/5832/files/11678514303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0472/3313/8853/files/sims_3_wedding_arch.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 6

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_off000078a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A8 5624 bytes
SHA-256: 0997cf069facc0b812022ca3abb8e96f8f1cd9c45798b6f9d995afc4b39c8273
font_01_sfnt_off00008baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAA 10120 bytes
SHA-256: 3263c237a53d2949580573099af865b6ad2a49803d6ca0cc2b6efd4b43021b49

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