Malicious PDF — malware analysis report

Static analysis result for SHA-256 0791d2434e79ad1b…

MALICIOUS

PDF

46.1 KB Created: 2020-08-17 02:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93715e68c73f37886805397cdf63e146 SHA-1: f8d95e92237452821b33d9b77d2d3740f05fc4d2 SHA-256: 0791d2434e79ad1bbcb30f84f618c9cef581fd4db23bde030c460583c4d6e071
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a redirector to a known malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=android+auto+vs+apple', which is also flagged as a malicious redirector. The presence of numerous links to external PDFs, many hosted on Shopify, suggests an attempt to create a link farm or distribute further malicious content, likely initiated via spearphishing.

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=android+auto+vs+apple In PDF document text
    • http://files.edinburghlets.org/uploads/1/3/0/8/130814706/xamosadurokeb-rapaxizumidadub.pdfIn PDF document text
    • http://files.middlefieldny.org/uploads/1/3/0/9/130969631/mubelapawo_mopovojisokokol_poxodulokoz.pdfIn PDF document text
    • http://files.siliconvalleybollywood.com/uploads/1/3/1/3/131379113/1096929.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/1/0448/3537/3213/files/killing_the_black_body_chapter_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/10452507035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2175/2726/files/pifonimosijewalevejaraxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/64498129776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2139/4343/files/artificial_intelligence_a_modern_approach_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1076/8546/files/tesomukudex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/zonitokujagabaxezof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6641/5514/files/gedux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3382/9277/files/luzemevipezugate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0636/9697/files/army_mission_java_games.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 2

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_off00006b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B70 5000 bytes
SHA-256: f85d16e8510fe4686939e28314cbf013313c77983d9bd9fd99e4243ca223d631
font_01_sfnt_off00007c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C82 15240 bytes
SHA-256: 84d5a6887e42bcd4f3c9879c44a9fea00350d09531f03abc55ec2c98420783ab

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