Malicious PDF — malware analysis report

Static analysis result for SHA-256 c33e23be86fc01b8…

MALICIOUS

PDF

58.5 KB Created: 2020-08-06 08:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ae142965b4bf34b5de2f677ad27ceb3 SHA-1: 0c60d68c4360e5c4f8b04363332d1a38ed1b9a22 SHA-256: c33e23be86fc01b82a18d1e10361168d5699f09f27c53619e930ffad5dc80ca6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file exhibits characteristics of a link farm, containing numerous external links. One of these links, 'https://ttraff.com/wb?keyword=american%20working%20class%20literature%20an%20anthology%20pdf', is identified as a malicious redirector. The presence of a large number of links, including the malicious one, suggests an attempt to drive traffic to potentially harmful sites, possibly for phishing or malware distribution.

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/wb?keyword=american%20working%20class%20literature%20an%20anthology%20pdf In PDF document text
    • http://files.coastalbellyfest.com/uploads/1/3/0/7/130775565/jinuxejowogirob-bumubaxobotugar-pudixodavedunak-duzavigirisimas.pdfIn PDF document text
    • http://files.stclementofstamford.com/uploads/1/3/0/7/130738805/wokebovimojuw-xazawo-tetogalarawazo.pdfIn PDF document text
    • http://files.malosicafe.com/uploads/1/3/0/7/130738889/9915161.pdfIn PDF document text
    • http://files.thelanguagegarden.net/uploads/1/3/2/6/132695472/085cf86.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/xiguxalenagidofivixonagez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/jbl_eon_15.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6595/6760/files/febugatemifilesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9232/7077/files/delta_pilot_contract_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/xobow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4922/2298/files/gevifulisokovebuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6048/files/dark_souls_2_estus_shards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/godub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/63923494105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6598/3655/files/rovifama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9116/5333/files/muvebubewesosukipuranimup.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 3

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_off00009208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9208 5816 bytes
SHA-256: 849dd27a0b65da424d4601eb7557b62513aea71506592512c47d67761480c258
font_01_sfnt_off0000a5c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C6 16948 bytes
SHA-256: e6296587e48ed70761fbbd0bc5cb0bb7c4e1b2207f57e4fd6d9b015c94c56f07

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