Malicious PDF — malware analysis report

Static analysis result for SHA-256 6903b869feb6bfe4…

MALICIOUS

PDF

34.2 KB Created: 2020-08-09 17:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dfbf08958f95164c75b666bf14847ac6 SHA-1: e160f78fbb34a98a9423ef0c65f5b8c0d4c2bfd0 SHA-256: 6903b869feb6bfe428e8cadda262d49c830354170fb5e5500734bfb469b9d346
194 Risk Score

Malware Insights

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

The PDF contains numerous links to other PDF files, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. One primary redirector URL, https://ttraff.com/pify?keyword=bearing+pdf+file+download, is flagged as malicious. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to the redirector and other PDF URLs.

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=bearing+pdf+file+download In PDF document text
    • http://files.ksexoticfragrances.com/uploads/1/3/1/4/131437724/28d1959af954c62.pdfIn PDF document text
    • http://files.loveadelyn.com/uploads/1/3/1/3/131384604/1988225.pdfIn PDF document text
    • http://files.lyricsandpoems-cacreed.com/uploads/1/3/0/8/130813821/6881740.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/1/0435/6908/6619/files/winuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4170/9462/files/lukinadogas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2484/2906/files/4166420223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6871/1321/files/first_500_prime_numbers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6402/4479/files/95724196142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8771/5742/files/medakorukabitezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/wevula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/pazov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/diturubeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3638/4159/files/64822201768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7628/0729/files/9824018512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/godfrey_higgins_anacalypsis.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_off000048d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D3 5172 bytes
SHA-256: b7764d1ec4c7af01df877008faa7ceb8514d80822ae85f224c9cea7f28be0ae4
font_01_sfnt_off00005a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A92 10016 bytes
SHA-256: 20a663534475af0428323797adf120a7ffa8ce1a6ae39b808cadf3f7492a679f

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