Malicious PDF — malware analysis report

Static analysis result for SHA-256 22e4f815235bb914…

MALICIOUS

PDF

41.9 KB Created: 2020-08-26 16:10:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee290ca238103efddad1d19861c5c0bb SHA-1: 6ce2147d60a19dcf4fc787ac94c0a1a49b6d98b8 SHA-256: 22e4f815235bb914122dd62727c366ccaae91fd05f6f3bb6875641d03e49bc3a
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.ru'. The document body also contains this URL, presented as a link to a 'solution manual'. This URL is likely used to redirect the user to a malicious site. The PDF also contains a link farm heuristic, indicating a large number of outbound links, many of which point to Shopify domains, but one points to 'fekuxat.fantailphotos.com' which is also suspicious.

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=probability+and+statistics+for+engineers+and+scientists+solution+manual+9th+edition In PDF document text
    • http://fekuxat.fantailphotos.com/uploads/1/3/1/4/131453870/mezawepiroselujebuga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/niwapupikesokexarikuxaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/dodenegawufenalixebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1600/9374/files/juxasajon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4225/8587/files/91726917190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5804/files/64002233536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/90542813668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texojorigerusoxuduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0804/0853/files/36634502790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/xuzerixadikulufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0252/6887/files/wrecked_ship_guide_re7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9313/8333/files/anbe_sivam_movie_tamilrockers.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5453 5716 bytes
SHA-256: e8cbf05f186b3ee2c65aac0e21558d450723aa03d593de2b7596ab66f91c5562
font_01_sfnt_off0000678f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678F 10660 bytes
SHA-256: ac1e5b989f1cf079167f936c837327545d84ed2d5d7268e948d3345fdd65595d
font_02_sfnt_off00008bc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC0 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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