Malicious PDF — malware analysis report

Static analysis result for SHA-256 792efb33396854f7…

MALICIOUS

PDF

40.5 KB Created: 2020-08-11 13:32:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 136b6fb801a687dabb07c252f4c46438 SHA-1: 753a03524ca80db6a7f0b35b3cbcc182d08490b3 SHA-256: 792efb33396854f71b498dd329726028c6f075b07d1ffd81cc6833d9b78d9e5b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body text, though heavily obfuscated, includes keywords related to free downloads and the malicious redirector URL, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=general+biology+1+book+pdf+free+download In PDF document text
    • http://woxakaw.shorewoodculinaryarts.org/uploads/1/3/0/8/130874655/21940.pdfIn PDF document text
    • http://files.ellabonitastores.com/uploads/1/3/1/8/131856519/kazikesabi-xelokamebegu.pdfIn PDF document text
    • http://fikitut.splashdogwashing.com/uploads/1/3/0/8/130873851/4633240.pdfIn PDF document text
    • http://files.ratoathbadminton.com/uploads/1/3/1/4/131438839/vuzefoziwi.pdfIn PDF document text
    • http://files.f-c-f.net/uploads/1/3/1/4/131407183/nivexapitatat.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/1/0427/5381/8790/files/free_bible_download_niv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2095/files/calculus_analytic_geometry_larson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9051/7911/files/fozixafavibologijumatot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4178/1920/files/jisefetuwufik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8625/6030/files/convert_idml_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/91909202603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8847/8359/files/lavugepifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/zazisetivepixenob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/nuwamaforubulogidisisow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/mutual_lease_termination_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2324/5216/files/32581046996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/asidosis_metabolik_pada_gagal_ginjal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1587/2423/files/didenanulotadokerub.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 5

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_off00005e3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3E 5512 bytes
SHA-256: 3b8476b0bacb4057b0e5980cfbfcba666ff9f00c5f21aacc17a04da6441ae790
font_01_sfnt_off00007134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7134 10352 bytes
SHA-256: f86c4ecf0c58e57cb8f49988d94eef4c5760a30d22487814c515ce9974c2e7b8

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