Malicious PDF — malware analysis report

Static analysis result for SHA-256 4538f6df4bd4dc07…

MALICIOUS

PDF

39.0 KB Created: 2020-08-11 01:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a044366a2a5ade4a409a61dd60db216 SHA-1: 7346b8959ea3ded9fff9c6d378f9c783c859f8b2 SHA-256: 4538f6df4bd4dc0751f36109e2a0e13e5298497c2daec234a8052f50086d6a3b
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector. The document body, though partially garbled, suggests a lure related to a 'joint venture agreement'. The presence of a 'visual download button' heuristic further supports a social engineering attack. The primary malicious URL is https://ttraff.ru/pify?keyword=cidb+joint+venture+agreement+pdf, which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cidb+joint+venture+agreement+pdf In PDF document text
    • http://files.jasontakesphotos.com/uploads/1/3/2/6/132695432/4ae55068.pdfIn PDF document text
    • http://tixifisa.100youthwhocarecentralyorkregion.com/uploads/1/3/2/6/132681352/tewirefowawofo-depuwipimagapa-kenidif-wesakoli.pdfIn PDF document text
    • http://liwawa.tysonwestley.com/uploads/1/3/1/4/131454024/5866311.pdfIn PDF document text
    • http://files.aresapparel.shop/uploads/1/3/1/4/131437074/8606731.pdfIn PDF document text
    • http://files.borobot.org/uploads/1/3/1/4/131453432/6a2a3226a5e016.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/1/0434/8418/4728/files/19198631587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2554/5890/files/70691176935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19227598733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/6563343398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wabodenerevugibew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/pejananexivimuviga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9980/7126/files/60721423685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/73323545843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/pelivavujasiferip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/xudapel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/minecraft_pe_hunger_games.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 4

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_off00005949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5949 5332 bytes
SHA-256: 0de076b6f37f27923177c64b68708627ce942772ed38f75d21bb933e1e8f6888
font_01_sfnt_off00006b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5C 10564 bytes
SHA-256: c3aa615ced1e7ba478dba025fe7e364a0d05869430ac3e195750eef313962503

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