Malicious PDF — malware analysis report

Static analysis result for SHA-256 0efb8bbf9407a883…

MALICIOUS

PDF

45.7 KB Created: 2020-08-17 05:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c85914679b782fbfe4aab2150629152d SHA-1: f77f333c0b35da65649b1e8a454c03d3345c07a1 SHA-256: 0efb8bbf9407a883e379682a0704437832d5082a24585f03212a9d91eaeaac62
162 Risk Score

Malware Insights

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

This PDF file exhibits malicious behavior through its extensive use of external links, including a redirector link to traff.com. The presence of numerous PDF links suggests an attempt to create a link farm or distribute further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious redirection or content distribution scheme.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=brilliant+legacy++sub+indo In PDF document text
    • http://tazimuw.nabclean.com.au/uploads/1/3/1/6/131607131/mabotujowikopasataxo.pdfIn PDF document text
    • http://gopolop.jamesedwardhughes.com/uploads/1/3/1/4/131437709/vevimenarog-rokaduwilakef.pdfIn PDF document text
    • http://files.ourcolourfulworld.com/uploads/1/3/1/4/131453574/8528d99d0.pdfIn PDF document text
    • http://jozuler.querubicamp.com/uploads/1/3/0/8/130873995/wowega.pdfIn PDF document text
    • http://files.trueleadershipretreat.org/uploads/1/3/0/7/130776409/vowovitala-sefeluj.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/1/0433/0687/7080/files/36283751979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/linux_commands_for_aws.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3313/2193/files/kabiramemopobilowosulije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/tasavemolezimaduwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/nejibomimawotitimilusidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/the_canterbury_tales_modern_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2007/2613/files/manifestation_of_the_holy_spirit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0614/8255/files/pasixokefetixut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/babijasutisiporubut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/23464312427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0432/9125/files/49013339561.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 4

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_off00006691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6691 5396 bytes
SHA-256: b3bdf9f2102c4f0d8d7823b38012386ef2c1865276d33ab8d4ceec43d8e5e701
font_01_sfnt_off000078f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F0 16020 bytes
SHA-256: 03aa65b7b7afb1168cc12f988b68528085c686a2a7c6e5b6d9a0c83e90471697

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