Malicious PDF — malware analysis report

Static analysis result for SHA-256 f82f426e48b95daa…

MALICIOUS

PDF

33.1 KB Created: 2020-08-12 18:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b1b3dcd772acf9db33767c7e2f0787a SHA-1: 4f4b68b6ff1d9922a7d5173b652cdbe084d88499 SHA-256: f82f426e48b95daaf53122af018f50cd3c399b2649ac902ecceb594c22995868
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to ttraff.cc, indicating a phishing or redirection attempt. The document body, though malformed, contains the text 'Advanced materials notes pdf' and the malicious URL, suggesting a lure to download potentially harmful content. The ML classifier strongly supports the malicious verdict.

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=advanced+materials+notes+pdf In PDF document text
    • http://files.reidmachinery.co.uk/uploads/1/3/1/3/131383743/jigolim_bamolegemoz_koselita_xurexaxejuju.pdfIn PDF document text
    • http://files.mjconsultations.com/uploads/1/3/1/8/131856247/5219031.pdfIn PDF document text
    • http://files.fullyfusedcrafts.co.uk/uploads/1/3/2/6/132695596/gemezizesefos.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/1/0431/3127/3365/files/bawepudobunekibemanavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/wivonegukat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/types_of_consonant_sounds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2549/0332/files/99709697920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/wings_of_fire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/graph_algorithms_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7129/9999/files/86349664203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/rewena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/43353358927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/zerejigigurimezebugazow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/dewesemesaruzexir.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 8

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_off000045c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45C8 5352 bytes
SHA-256: 60a48c8f58bd26a5d06b69ad9f0de2defe39b9ed46d1c1cf381fa46ea47a8582
font_01_sfnt_off000057e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57E3 9424 bytes
SHA-256: 76a509249269b7950d295fa078c3f239c757df3a47510884c39358ec6a57e496

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