Malicious PDF — malware analysis report

Static analysis result for SHA-256 668825c9add4b537…

MALICIOUS

PDF

41.4 KB Created: 2020-08-05 06:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1ca3f52fb264c5ba29dd5205be99904 SHA-1: c365b83c9f4567aa0c6e89383a76dbc67232c033 SHA-256: 668825c9add4b537a6efb99425b85f3c5b5491997680aea1007d9aa116ed8a6b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a redirector service designed for SEO manipulation and phishing. The primary redirector URL is 'https://ttraff.ru/pify?keyword=borg+warner+turbo+catalog+pdf', which is also present in the document body. This suggests an attempt to lure users to malicious or deceptive content under the guise of a catalog. No scripts were extracted, but the presence of numerous links and the ML classifier's high confidence indicate 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.ru/pify?keyword=borg+warner+turbo+catalog+pdf In PDF document text
    • http://files.pavisionuk.com/uploads/1/3/0/7/130776483/63074.pdfIn PDF document text
    • http://files.singletree-emporium.com/uploads/1/3/0/7/130739744/gobekoxapajogit-furizexobo.pdfIn PDF document text
    • http://files.rhymedilation.com/uploads/1/3/1/8/131856743/wobifirupomati.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/1/0438/4315/8166/files/36164885579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2421/9293/files/36519672813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/zubaxitiwafufelilebaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2112/2211/files/gujupanobijidujasuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/zepesimilidava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/gebozovamajipugisoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2282/7165/files/maneteremotet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65760981278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/diddy_kong_racing_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80787326618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8268/6362/files/givuludup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6148/4437/files/dragon_naturally_speaking_free_trial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/dorefetavemogad.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 7

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_off00005da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA9 5428 bytes
SHA-256: a3b6bbc6a1f88b1e22c99b7a80d8c1c248d315527e91a81c0a3878dbeb9a00f8
font_01_sfnt_off00007041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7041 12628 bytes
SHA-256: 5871c2e45f3b9f9e7fae98c1cdaf8be847bb4a7ffc75105102e042b95b320b79

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