Malicious PDF — malware analysis report

Static analysis result for SHA-256 493f72e9741f50d3…

MALICIOUS

PDF

44.6 KB Created: 2020-08-18 19:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2660e298fc02b473364640bf55aa3ec1 SHA-1: 5dc70f5833f743971c922356d71256bac5f4b55e SHA-256: 493f72e9741f50d38682a95190a188fcf1d960a70a5f8adfc0509c70a24741ba
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=performance+evaluation+sheet+meaning', is designed to lure the user into clicking it under the guise of a performance evaluation. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector attack pattern.

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=performance+evaluation+sheet+meaning In PDF document text
    • http://fosiru.ladyteviot.co.uk/uploads/1/3/1/8/131856177/kukokujomoge.pdfIn PDF document text
    • http://files.mommyinla.com/uploads/1/3/1/3/131383283/bikedenuxogobifa.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/1/0430/5590/6973/files/77458155387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9478/5694/files/12605627079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/kigexarakomada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3001/8210/files/lawepajezalifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/49437035092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3711/1973/files/mutididirupejusawun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/senak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/87480639786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5485/7369/files/order_of_operations_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0067/3950/files/marmoset_toolbag_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1373/3533/files/novajoxuwaleguvotive.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 2

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_off0000718b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718B 5356 bytes
SHA-256: a393d47d4b1b77d230d8bf18ea06643f90851d4b963137135287f1da0fe13a21
font_01_sfnt_off00008395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8395 9964 bytes
SHA-256: 2676dcdb159493b3130d6b78b984acfb5e31d55465f304da731e68885f120e6f

Open this report in the interactive analyzer, or submit your own file for analysis.