Malicious PDF — malware analysis report

Static analysis result for SHA-256 9376811aed8e0737…

MALICIOUS

PDF

45.2 KB Created: 2020-08-08 10:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e385b5067ce3a15300ce0137da8eff7 SHA-1: b6ea3dc5ed61f2d4f68152fd92e0856c0759b188 SHA-256: 9376811aed8e07375e1da812f34e3462764e0b29844d4fd899d492d2d6d86408
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to financial accounting notes, suggesting a lure to entice users to click the malicious links. The presence of numerous external links suggests a link farm or SEO poisoning tactic.

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.cc/pify?keyword=financial+accounting+and+management+notes+pdf In PDF document text
    • http://files.charityscienceoutreach.com/uploads/1/3/2/3/132303286/jezuwamaber_fojiw.pdfIn PDF document text
    • http://files.splashgordon.net/uploads/1/3/1/4/131453902/sugogeketuve-fivemen.pdfIn PDF document text
    • http://files.travelingnurses1.com/uploads/1/3/1/3/131378771/5969702.pdfIn PDF document text
    • http://dewut.iso1920.org/uploads/1/3/1/3/131381428/2629042.pdfIn PDF document text
    • http://files.bridgerbirthing.com/uploads/1/3/0/7/130776619/407938.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/1/0436/0844/0995/files/50595984991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/1689001282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18187133080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9472/8103/files/scan_file_editor_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0043/4586/files/treasures_grammar_practice_book_grade_6_teacher_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7595/9973/files/fuvapiwifokufekazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9612/9192/files/43209731392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6106/7427/files/interview_questions_for_receptionist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/80722758577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/sibipusotemufuzet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4098/1660/files/58759261001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8282/5376/files/69102430017.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 8

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_off00007194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7194 5332 bytes
SHA-256: cc8fa935ad560c8484eb98e32d5bb9497235294a964f7b0544d37ecff2c0c8cf
font_01_sfnt_off000083ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83AE 10460 bytes
SHA-256: 2e067383e6d7d14901c8c32fc653e3b56b947fb729e3e21fe654dfabb457d1b3

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