Malicious PDF — malware analysis report

Static analysis result for SHA-256 37287f35646df191…

MALICIOUS

PDF

46.3 KB Created: 2020-07-31 14:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 84acde5d15e16d629a6961dab0a13e1f SHA-1: 7489fa1b311f0c8399c2ab93aad07d4703deacf2 SHA-256: 37287f35646df191d6c421ffb3d27ae7615e34a4fa02450a24075fef4836aff0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document is designed to lead the user to a malicious site. Additionally, a large number of external PDF links were found, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of a malicious intent.

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=algorithmic+trading+systems+pdf In PDF document text
    • http://files.charliebreckenridge.com/uploads/1/3/1/4/131437493/d723e9.pdfIn PDF document text
    • http://files.happiervalley.com/uploads/1/3/1/4/131408954/7697838.pdfIn PDF document text
    • http://files.thesoapshepherd.com/uploads/1/3/0/8/130813330/venuvidon-gixop-jemexepoba.pdfIn PDF document text
    • http://files.beachleech.com/uploads/1/3/0/9/130970023/3393608.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/1/0431/9903/7595/files/55608820228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/mifokisupomukikufiwadoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3183/8368/files/38069928627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9387/6118/files/39639052255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9504/6824/files/tosofukamozaxamonilison.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/lemovodudifeziduwokevigak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6282/0005/files/buminuzalifogiwibanimasux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3179/6634/files/18102259492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/75029608398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9734/8514/files/lenuzegerulaxiton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/bugelumawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/9078655964.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_off0000756b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x756B 5448 bytes
SHA-256: 366d926f2ca9b50a0da66adb4b85bc8bf3df4d751bf3d9377814d4c573b09dfe
font_01_sfnt_off000087cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87CB 10696 bytes
SHA-256: 3642ab6797895cb82ff00faccdd3ec3d900e10ae50bb5279782a2947119ede17

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