Malicious PDF — malware analysis report

Static analysis result for SHA-256 8854bd93430ead24…

MALICIOUS

PDF

42.0 KB Created: 2020-08-07 06:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dcb037977f18bc7a1a2bcfe6a38af799 SHA-1: 2cd6d2b182c132125a41c64ec373f6e98eeb05df SHA-256: 8854bd93430ead24ef218c9fae3f3a2d6c1c3c2394a8998a6333f3bd3075520f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting a lure related to 'work study in apparel industry pdf'. The presence of many external PDF links, including those to Shopify, indicates a link farm strategy, likely to obscure the malicious redirector. The ML classifier strongly indicates maliciousness.

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.ru/pify?keyword=work+study+in+apparel+industry+pdf In PDF document text
    • http://files.australiancouncilofhinduclergy.com/uploads/1/3/1/6/131637529/mapowagemedolare.pdfIn PDF document text
    • http://files.drmichaelgimbel.com/uploads/1/3/1/0/131069789/rovufu.pdfIn PDF document text
    • http://files.uscgminf.com/uploads/1/3/0/7/130738919/vezobefudiw.pdfIn PDF document text
    • http://files.solotetea.com/uploads/1/3/2/6/132680874/8560179.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/zugazad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/52557793449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/xuderofagut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0667/2546/files/68079929217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7207/8499/files/46011827972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/autonomous_maintenance_for_operators.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8035/1897/files/what_is_a._js_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/bivovovuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/95608157703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3628/5860/files/coreldraw_x8_shortcut_keys_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7710/5832/files/90775610343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5375/1189/files/leisure_suit_larry_reloaded_walkthrough.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_off000065fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FA 5212 bytes
SHA-256: 6da3e7c25a66972b1082d7151574845d262842084fd0a77a183f479e23e38a74
font_01_sfnt_off000077de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DE 10348 bytes
SHA-256: b17d43057d4c9ac09248c4fd65770de57b320d8eb5da3d2120dee2f650c807b4

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