Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ffce4539f30326d…

MALICIOUS

PDF

37.5 KB Created: 2020-07-28 22:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 829bfce497ca0b0e21ba14cb21f8c5cd SHA-1: 0204f391fcc97fbd56e48fd50c0ce4b54be39a51 SHA-256: 0ffce4539f30326d99932e942e0ea6f2a476547389a6362ae31b2fcc61418d75
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create a link farm, with a primary redirector pointing to a malicious URL. The ML classifier and heuristic firings strongly indicate malicious intent, likely to trick users into downloading further malware or visiting phishing sites. No scripts were extracted, but the embedded links are the primary attack vector.

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/pify?keyword=bride+and+prejudice+movie+free In PDF document text
    • http://files.onewayjesusministries.org/uploads/1/3/1/0/131070149/menomiwexekepopi.pdfIn PDF document text
    • http://files.stjamespa.org/uploads/1/3/2/3/132303005/fudovodi.pdfIn PDF document text
    • http://files.joanrobertaryan.com/uploads/1/3/2/6/132696112/3406846.pdfIn PDF document text
    • http://files.fourlittleoneshilo.com/uploads/1/3/0/7/130776674/b06fe4d23a.pdfIn PDF document text
    • http://files.martinchilando.com/uploads/1/3/1/8/131856034/mugevelelekarul.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/1/0430/6731/0231/files/bemituxoluzotoxus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/fuwepizutimimaroxalabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4831/2736/files/wiluzimejukemage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/xodesajijewiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3997/1736/files/22273921138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2019/7789/files/94500060590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0411/6637/files/vekekupoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8434/0630/files/gezenirexozevim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/tuxulifudobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/10594379000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9679/3503/files/39922404795.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
🗂 Part of campaign: fourlittleoneshilo.com 3 samples

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_off0000561b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x561B 5076 bytes
SHA-256: 06cc6f68d97ba46b74d2f7ad4020b6d07d0cc7e0fb2649cd4b4705c5dc764d4b
font_01_sfnt_off00006749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6749 9740 bytes
SHA-256: beb7c20a9a35ea782e12689b8a1c29329315b75c838055345665ce8a167bed8d

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