Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fbce7ef4252e15b…

MALICIOUS

PDF

38.7 KB Created: 2020-08-31 06:28:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ecd26449e0b085db3533c7b906756634 SHA-1: df17b97244ec8ba3c46430a37d50da6d26a2b3f5 SHA-256: 0fbce7ef4252e15bc9a502fe121f74f6d18a10310d4fa49d4de25559a343c7e3
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and heuristics suggest a lure related to 'Warframe unvaulted primes' to entice users to click the malicious link, which is likely part of a phishing or scam campaign. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which are likely part of the same malicious infrastructure.

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.ru/wix?keyword=warframe+unvaulted+primes In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/576447_6159cf9ffc664de1a3a421b2bf854e64.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e1d12c_ae91382296e843da8f9e426862b26736.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6c98bc_eae504ffda2f43059f48834429951fce.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1e4819_2718b08646d64620a39ea5f325425b82.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_ce494ce94c4b49d4bd43a538422db39c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/25165517465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0736/9639/files/fiforesimikukolobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0604/0992/files/51038654907.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_490aa790dd5a4d7a8d9506a8d4864a6d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/83b1b3_75d01f0e5c474fcf8b2a6066fca7be39.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/de65f7_79899ef2a2a5464795c52cfa7bea3e5a.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F17 5260 bytes
SHA-256: a8df34343f5b6668ed87c8fb337cd489c5722406cb8f93ec620a905fd227c8c3
font_01_sfnt_off000060e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E8 2024 bytes
SHA-256: a511fb262e2f240b0cc62b800179189f1c69c7b4d67d938f9bc0c5e12ef74554
font_02_sfnt_off00006a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7D 10484 bytes
SHA-256: c9a187ff192c5c0f0ea7c5686d13923edeb8dc390b24bcef062bd2ef0c76b868

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