Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b011ddc769f36c…

MALICIOUS

PDF

84.9 KB Created: 2020-07-28 19:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5e5b565668d5921b5e61e4de9e716cb SHA-1: 00fb9c112c17199bad7776db7ef2bc6609fd23c0 SHA-256: 79b011ddc769f36caeee955e977644febe5f95b5643c2feb080ecad87141bfa6
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at `ttraff.ru`. The document body, though heavily obfuscated, suggests a lure related to Google Sheets, aligning with the 'SEO link farm' and 'image lure' heuristics. The presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially 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.ru/pify?keyword=set+column+width+google+sheets In PDF document text
    • http://files.pawsrehab.net/uploads/1/3/1/4/131438629/nimogala.pdfIn PDF document text
    • http://files.kokmatoys.com/uploads/1/3/0/7/130775518/wadafajigowakasedos.pdfIn PDF document text
    • http://files.youcannotunsee.com/uploads/1/3/1/6/131607805/tubugelawakolow.pdfIn PDF document text
    • http://files.valleyriverdancers.org/uploads/1/3/1/4/131437370/leretumasarenotaba.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/1/0432/8570/8953/files/radeduxilagewapenepuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7350/files/32930296958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/lafokumapovudef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8392/2585/files/67158451054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/61113923531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1127/4914/files/29079923697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4414/3253/files/26217157337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1079/1323/files/zamatiziridijamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6312/2843/files/tofibaxebododaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3099/4326/files/33307996350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0318/2243/files/84340107614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/76124854200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0925/3282/files/20064912546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/wolalom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1818/1016/files/tekavijetefepoxizaka.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B98 5124 bytes
SHA-256: 429f7928155baaa26733dda861f371e394a11bde8ccc9007f6e4c433d83fa368
font_01_sfnt_off00011ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CE5 12480 bytes
SHA-256: 93c2bcd1781cdb4bdf6782e38a2232faa69dd107bee386270a93eafe0ea0082b

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