Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb758e8908e98b6…

MALICIOUS

PDF

56.5 KB Created: 2020-08-04 04:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6eb78532fced738d97db4afa982ae3fe SHA-1: a6d49a1e948d76ef0703959560dda426e9d60a7e SHA-256: 6eb758e8908e98b6905172e4626592bc27d2c5835c532f01e995ea809829e98d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract search engine traffic, likely for phishing purposes. The ML classifier strongly indicates maliciousness.

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=adaptive+reuse+of+industrial+buildings+pdf In PDF document text
    • http://wudix.laurennelsonyoga.com/uploads/1/3/0/7/130738524/a43d23aebefa.pdfIn PDF document text
    • http://files.materials4artists.com/uploads/1/3/1/4/131438313/wuroxibuxa.pdfIn PDF document text
    • http://files.alltexserviceco.com/uploads/1/3/2/7/132712333/dodujonasugam-jojilosak.pdfIn PDF document text
    • http://files.marchesmakers.co.uk/uploads/1/3/1/4/131483069/9bd3a1a8c.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/1/0428/9835/8432/files/84574839703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/lopibuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9058/7291/files/ford_e350_repair_manual_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5346/9083/files/map_of_benue_state.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/latibor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/kubakenalatejakokefovig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/medical_receptionist_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/bukisubodedim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/minecraft_lord_of_the_rings_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2869/2643/files/tofexabojowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/lunaluxenepesubigebofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/8589347037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6572/0486/files/moxezalojubebanaxi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD0 5400 bytes
SHA-256: 883947bc51a94d18ee4422cd15351b288430e2cd6bdb8032b86883154cdf347e
font_01_sfnt_off0000b240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB240 10096 bytes
SHA-256: d982496d7bbaa87dce8276d6f7c523c7d4a33485c78e9287eee140fef53bdc3e

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