Malicious PDF — malware analysis report

Static analysis result for SHA-256 774dc1b1e8bf12bd…

MALICIOUS

PDF

58.4 KB Created: 2020-07-29 12:25:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 221a99bc8a9328faa5d0b477a75f62da SHA-1: e08501b08670bdae74d725c54405b7fed3a7eff4 SHA-256: 774dc1b1e8bf12bd0898542290b06f6a9f69960a782864b11ac88d9a997ea5c2
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a redirector service. The primary redirector URL is `https://ttraff.ru/pify?keyword=arrays+in+c+pdf`, which is flagged as malicious. This suggests the document is part of an SEO link farm or phishing campaign designed to drive traffic to malicious sites. No scripts were extracted, but the presence of malicious redirectors and a link farm indicates a high likelihood of a phishing or malware distribution attempt.

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=arrays+in+c+pdf In PDF document text
    • http://files.speakadelic.com/uploads/1/3/0/7/130775304/venusun.pdfIn PDF document text
    • http://files.deemerphotography.com/uploads/1/3/1/4/131437247/4661083.pdfIn PDF document text
    • http://files.daviscountydoulas.com/uploads/1/3/0/9/130969446/8666630.pdfIn PDF document text
    • http://files.ancientwavestudios.com/uploads/1/3/1/3/131384635/c7ea8.pdfIn PDF document text
    • http://files.cfcstuttgart.org/uploads/1/3/0/8/130874396/13e1a697.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/1/0430/9201/7305/files/27937360421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8072/9251/files/somosabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4432/8856/files/25823263214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/bidow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3867/1010/files/korevujox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6845/7122/files/pugalodoguwubava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87678197609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3821/files/83868524273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/45605830219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/tebojopox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/luzofedupipubawobupo.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_off00009ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA3 4688 bytes
SHA-256: 4ad96c491162bcc6cdacf58c940fe4ad264ee00f6a1129d6154396a40fffc621
font_01_sfnt_off0000ab92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB92 15392 bytes
SHA-256: 9a2b7690413e8ac18f6bf0ccb986daabbd1b78ee39671d16c7e7f15bd5f0ba52

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