Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8852889a2575b81…

MALICIOUS

PDF

59.6 KB Created: 2020-08-13 02:38:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79206ec80fe6f1c010b584f870f469c3 SHA-1: 4efe050ce586a4e63013600779f53749cdc775fe SHA-256: b8852889a2575b812f1475fd2abbbf9513b03e94422c612706d7e64691896961
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is used to lure the user into clicking, likely leading to a further stage of infection.

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=artificial+intelligence+in+military+applications+pdf In PDF document text
    • http://nisubali.vpecc.com/uploads/1/3/2/3/132303072/tubulufosojoxep-wozux-mugudoridumedo-jebazuvuku.pdfIn PDF document text
    • http://files.tiffanyarivera.com/uploads/1/3/1/8/131856290/61f34f80.pdfIn PDF document text
    • http://zokeledu.seaproof.tv/uploads/1/3/1/1/131163599/3523117.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/1/0428/2338/5247/files/kajuwadelesozapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/natevuvavapukixexeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/difinebasigesosekimix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/partidos_politicos_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/99376152244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/21235239972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/nixafemewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1630/5312/files/rekuviruxiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3696/5029/files/13292700548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/applied_econometrics_with_r_kleiber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5584/8355/files/73812771044.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 5

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_off0000aaad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAAD 5564 bytes
SHA-256: 33f338d935c7aab6b409d4712ec71508995bec7a405384f5d9b6ef6399c87c65
font_01_sfnt_off0000bd7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD7D 10500 bytes
SHA-256: a46abc260c62360992888ca26946bdc797e1cff6b7c82c6731657285b8e567a3

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