Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f317e466f3f0509…

MALICIOUS

PDF

46.0 KB Created: 2020-08-08 08:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51b250bafa8860895893d57f3a90c3cd SHA-1: 86dd831a904b5a4a2bbfbf1e38df0c17f80e7f34 SHA-256: 3f317e466f3f05097dd678df51d856b43cb8451e5c2204de4ff165a6e3fe5e8c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This indicates a link farm or SEO poisoning technique used to lure victims. The document body, though heavily obfuscated, contains the target URL, suggesting the PDF's primary purpose is to redirect users to malicious infrastructure.

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/wb?keyword=b.com%201st%20year%20question%20paper%202015%20pdf In PDF document text
    • http://files.i-tee.org/uploads/1/3/1/6/131637529/xunerunirerenuxopug.pdfIn PDF document text
    • http://files.edwardschapel.org/uploads/1/3/1/4/131453527/nozubuxafepo-xewoziwisonab-lotaxajuwotip.pdfIn PDF document text
    • http://totexezi.cakesandcruffles.com/uploads/1/3/1/0/131070786/jezaj.pdfIn PDF document text
    • http://files.cpathleticboosterclub.org/uploads/1/3/1/3/131378953/2e35cb06ba8af.pdfIn PDF document text
    • http://files.roamingtaurus.com/uploads/1/3/2/6/132695679/semojawa.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/1/0431/7777/1164/files/2008_dodge_avenger_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7058/6022/files/xafeveteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7247/9647/files/61848786522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4188/0224/files/list_of_50_states_and_capitals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/pokemon_gba_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/clinical_trials_in_cardiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/fubuvasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3002/7157/files/28519997861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9639/2348/files/zisakulutamesedixum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/16707134656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6645/7254/files/rejalubizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1007/1448/files/98687617367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/9762133233.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_off000068d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D3 6028 bytes
SHA-256: 2abb1c4c0cf0c6f458a9da9eafe00b189fea2d7ea1a83b65f9213f4a50685b04
font_01_sfnt_off00007d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D62 14796 bytes
SHA-256: 7ae64f7cdbd3a3c6972defcba3b82ec5b22f8503e5649d4ffbf4e5458cd2a9d3

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