Malicious PDF — malware analysis report

Static analysis result for SHA-256 3876cea0d9f7e407…

MALICIOUS

PDF

42.1 KB Created: 2020-08-20 14:26:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc70def066929e00a826e86ba92c1bb3 SHA-1: a6d64e744234ca67714c0293d98658bdd6632ad0 SHA-256: 3876cea0d9f7e4078809e7b0713fee7f42e687cb6de4254e661a657474aa4c93
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, with one pointing to a known malicious redirector at 'ttraff.com'. The document body, though partially corrupted, suggests a lure related to a game ('Steel dragon osrs slayer guide'). The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's designed to redirect users to harmful content.

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=steel+dragon+osrs+slayer+guide In PDF document text
    • http://guzezamok.baltimoretowtruckservice.com/uploads/1/3/1/4/131410685/gapesuduzeze.pdfIn PDF document text
    • http://jotepij.oakridgecommonshoa.com/uploads/1/3/1/4/131438177/koravadanusabe_bowitawe_mewutegudafej.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/1/0427/6604/1244/files/30346017199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/jumufunabozatilewafisab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0075/6385/files/nivonunagefilazud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6712/7446/files/xeruvowatubimugixopuwikaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0066/8065/files/74915001389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/general_zoology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5574/2114/files/busejufanemowokusape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1185/8855/files/37679752386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2194/9335/files/dohrn_insurance_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2368/6056/files/rezomesikuwojade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7602/4475/files/52381788086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.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 1

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_off000066a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A3 5196 bytes
SHA-256: b463aae8701f87cc3edadb5e26f6372015090645a999265b8cfba5a6642515dc
font_01_sfnt_off00007856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7856 10388 bytes
SHA-256: bd27b6fb4f49c77ed8cba9859c258e81ba8a6fb967c25ea5142f1f5fbc7f92c8

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