Malicious PDF — malware analysis report

Static analysis result for SHA-256 f238bea78474a3b5…

MALICIOUS

PDF

57.8 KB Created: 2020-08-17 01:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2750418fa4dfe560483bd3cddc451f56 SHA-1: 29a2f7f0eba61789c72aabc8c41ea0b21e2c7301 SHA-256: f238bea78474a3b565d555be16e838120462a13f2ba5031d937470d6bfbf7900
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=animated+ppt+templates'. This URL is embedded within the document body, disguised as a lure for 'animated ppt templates'. The ML classifier also strongly flagged this PDF as malicious. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. The primary intent appears to be redirecting 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/pify?keyword=animated+ppt+templates In PDF document text
    • http://dojeti.alphakappa32.com/uploads/1/3/1/4/131453574/8741320.pdfIn PDF document text
    • http://fegod.saintmichaelscemetery.org/uploads/1/3/1/0/131070420/c9c5b428f41.pdfIn PDF document text
    • http://sosebiror.repnstep.net/uploads/1/3/1/4/131437756/c1de66b21.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/64989875230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/butcher_s_crossing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0939/1261/files/98399623636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6529/4491/files/busewudofiworu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8251/4581/files/24414069468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/sojujosesasidixoxunozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7245/4810/files/dumbbell_workout_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/iron_man_2_full_movie_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/88142467650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/jowadeduwanudi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a6c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C9 5000 bytes
SHA-256: 113e32c6f353d834c7059350b968ac3a6d11299e83add05742895c2ea1ea2233
font_01_sfnt_off0000b7a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A6 10212 bytes
SHA-256: 913f98d413060dbf5d9e245e224ee9b1454245c42369023cc3be297f075d16cd

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