Malicious PDF — malware analysis report

Static analysis result for SHA-256 575dcef806a75b64…

MALICIOUS

PDF

46.9 KB Created: 2020-08-06 02:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 736d395414ea55d45cefe64d4f3ddcab SHA-1: 69af7e5e1178a0b47a0c115c1c54833636accc81 SHA-256: 575dcef806a75b64311345b141f88eef463bdd05d9a94df7134c06958b54a748
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 pointing to external PDF files, indicating a link farm or SEO spamming operation. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=theological+dictionary+of+the+old+testament+botterweck+pdf', suggesting a phishing or malware distribution attempt. The document body itself is heavily obfuscated and contains remnants of the malicious URL.

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=theological+dictionary+of+the+old+testament+botterweck+pdf In PDF document text
    • http://files.pennstatebabylab.com/uploads/1/3/1/4/131437379/7975213.pdfIn PDF document text
    • http://files.mcyc.org/uploads/1/3/0/7/130775245/2086277.pdfIn PDF document text
    • http://files.brittanyprimavera.com/uploads/1/3/1/0/131070459/serebatu-fewokagosomusib-biwofulonexik.pdfIn PDF document text
    • http://files.jessicaleemanton.com/uploads/1/3/1/3/131384115/ledugirafunituzufo.pdfIn PDF document text
    • http://pivefon.ahmedal-azzawi.net/uploads/1/3/1/3/131379246/6627810.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/1/0431/3595/9202/files/tijovawifukolatorize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/xobofinij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/ramakijewix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6119/files/nubukeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/kamala_das_my_story_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/buzaxib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8133/4951/files/78301055707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/16456591623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72163988246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/91039616955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5020/4316/files/nazivatetiwuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0741/6219/files/data_analysis_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4978/7285/files/5082104507.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_off00007643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7643 5916 bytes
SHA-256: e5d21ef07d7a09dd75154c3377848db863b2dafb9fc1bb9debf990d2cf2c111a
font_01_sfnt_off00008a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5B 10308 bytes
SHA-256: fbc7a4e913dd3404e6aecd5473a3c006eae8cc7817201ecbe9e04b4b4f27c36c

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