Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2408f7cd81bef4e…

MALICIOUS

PDF

34.3 KB Created: 2020-08-01 17:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91e0504bf62d01e2658f885da1aa1ab7 SHA-1: 03d23ffb85f57334ac7c3c3e3645538a133e07cb SHA-256: b2408f7cd81bef4eb65158bd9be580a734689f8a969a900aeafe95c81ce46b8a
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm or SEO poisoning tactic to increase visibility.

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=chemistry+atoms+focused+approach+pdf In PDF document text
    • http://files.ultimatesyntheticlubes.com/uploads/1/3/1/4/131437139/narit.pdfIn PDF document text
    • http://files.stealthgraphix.com/uploads/1/3/1/3/131383837/vuwowu.pdfIn PDF document text
    • http://files.bandoncoosbaybuilder.com/uploads/1/3/1/4/131452981/5261042.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/1/0429/5789/7882/files/53431784291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lujodegiduwidixerilaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7225/7181/files/zoxiputovirarezasife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4152/9762/files/dizakufuvoturowavub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/35718777551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/49117384003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0157/7625/files/66892588001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/10240011334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/xilakodekimom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9375/4009/files/kakujitamijokapuxalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/jojilafukufupugokuxasux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1092/3423/files/lagufopodura.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_off00004922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4922 5368 bytes
SHA-256: 81d3a01c0444876eb8828576fca57b6ea3e6902c7b86e05d7e6e0c4ea8fea699
font_01_sfnt_off00005b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3D 9708 bytes
SHA-256: 7e0d904f6c16d1164902c59198a7246e2ffd7f500eb9e104aaa05e7ed66f6a9b

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