Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b40792370fe3be…

MALICIOUS

PDF

39.7 KB Created: 2020-08-24 04:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d104a79e0984b23e8ab88b9de66dae01 SHA-1: 619488be76a52a45e1e4b9d250f8cb59425816d7 SHA-256: 10b40792370fe3be3d38f8b427273063e0d7db95b48f9659aeceeec3552a6bf8
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to lure users with seemingly legitimate content. The ML classifier strongly indicates maliciousness, and the presence of multiple redirector links suggests an attempt to phish or distribute further malware.

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=incomplete+colonoscopy+cpt+guidelines In PDF document text
    • http://files.guldustah.com/uploads/1/3/1/3/131383453/wajamafifebovir_pesakoxidogak.pdfIn PDF document text
    • http://files.somdjuniorwrestlingleague.org/uploads/1/3/0/7/130740586/40d0da02444c5b.pdfIn PDF document text
    • http://files.bahamasvirtuallearning.com/uploads/1/3/1/6/131636808/7392318.pdfIn PDF document text
    • http://mewopikor.norcalfilmworks.com/uploads/1/3/1/3/131398404/junuwoxa.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/1/0429/3600/8870/files/chlamydia_trachomatis_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0267/2798/files/65604785987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9642/5119/files/52994201954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonixalekena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7147/0742/files/5971188310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5391/6060/files/letafosafaroritixolafejap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9112/3614/files/xabuvuxupabizekili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2726/8503/files/yakuza_apocalypse_dual_audio_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9236/1887/files/33047534167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1024/2198/files/rifejosewuzoni.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 7

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_off00005ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECB 5128 bytes
SHA-256: c6494e890442173dd8392737b1f287fa13200392fb6de31b374b1c7aae39f1fb
font_01_sfnt_off0000702a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x702A 9932 bytes
SHA-256: 24f82d520e16513bc6c45037def797a8dcdf5dba4409f350ec6c9ee7f70f9359

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