Malicious PDF — malware analysis report

Static analysis result for SHA-256 13f9a39337bd1da9…

MALICIOUS

PDF

46.4 KB Created: 2020-08-22 07:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1423b4ed746ead43a5a6f8be5c91f4e6 SHA-1: d928f1d19140ceb576de7322411af8638644739d SHA-256: 13f9a39337bd1da9c7304282b35469f5a8c807132b5c649885132985d0e45cb8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links, many of which point to a redirector infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=funcion+de+la+hormona+antidiuretica+pdf, which likely leads to a phishing or malware download site. The document body text, though partially corrupted, includes this malicious URL and other benign-looking Shopify links, suggesting a lure for users to click through to a malicious destination.

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=funcion+de+la+hormona+antidiuretica+pdf In PDF document text
    • http://sasufo.helpurchild.net/uploads/1/3/1/6/131606271/gufoxufu_romugiv_tizitazejodup_fokoxaso.pdfIn PDF document text
    • http://files.authoravadanielle.com/uploads/1/3/1/3/131381109/8a2a70.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/1/0438/4089/7181/files/anti_intellectualism_thesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6241/1942/files/morinemugizofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5402/3327/files/redurutowiwave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/dibufix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4062/0200/files/37537918330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1656/1319/files/you_too_brutus_movie_400mb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/35263629630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0099/3691/files/chevy_cruze_diesel_manual_regen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6163/1384/files/ditogajuxezozofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2326/9014/files/jorge_baradit_la_dictadura.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_off000075d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D8 5172 bytes
SHA-256: cc3a87495d9e0f66143a5a69badc3e9e1ae9f2af96103af5250c8dc00184db29
font_01_sfnt_off0000873d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873D 11032 bytes
SHA-256: c04704e6d99dc05fad472ea6c75b065a612cea18adb7b5310c1583b9686c297e

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