Malicious PDF — malware analysis report

Static analysis result for SHA-256 4912f01191664165…

MALICIOUS

PDF

50.2 KB Created: 2020-08-19 15:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 84108b9cbabbda79c843d34d9974db0b SHA-1: 131cc19ccb11e83946e924cd4b40cc05163efed8 SHA-256: 4912f011916641650becac77a81d6c4560159541ae3c4ce01c0edb645761a01a
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF contains a lure to install a browser extension or update, a common social-engineering tactic. It also hosts a large number of external PDF links, many pointing to potentially malicious redirectors like ttraff.com. The document body itself contains obfuscated text and embedded URLs, further supporting the malicious intent.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.com/pify?keyword=bootstrap+admin+login+form+template+free In PDF document text
    • http://dutof.spikyshooz.com/uploads/1/3/1/4/131453247/sotukokeratagobafot.pdfIn PDF document text
    • http://files.browncountyhumaneshelter.com/uploads/1/3/0/8/130813134/durixigox.pdfIn PDF document text
    • http://ruvobe.rangebourne-pets.co.uk/uploads/1/3/1/4/131453960/4217390.pdfIn PDF document text
    • http://xopofapun.hauntedmichigan.net/uploads/1/3/2/6/132695531/fivepotebab-dowajaguwi-sirum-vufevesogilo.pdfIn PDF document text
    • http://files.nhaohpad.org/uploads/1/3/1/4/131437515/fazewapa-zifafajanub-jasesudikesup.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/1/0437/4996/5978/files/process_analysis_essay_topics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/salelixakibikiziz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0631/1070/files/81761348981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/2012_honda_accord_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1289/7437/files/rifugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3855/3765/files/81813517860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0556/6366/files/74746252279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4068/3685/files/detakap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/97957299222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7454/files/38599610542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/basic_english_comprehension_test_with_answers.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_off000085cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CF 5408 bytes
SHA-256: 80874ae17b5c0490dcddcad47b4b6fada854f2900ec64ca34a1567247332b502
font_01_sfnt_off00009822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9822 10392 bytes
SHA-256: 022ee2e60055845b0e0acaf14b5a22d13d5c763e5e994603739e77e4693a1acf

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