Malicious PDF — malware analysis report

Static analysis result for SHA-256 72617caa39928937…

MALICIOUS

PDF

94.6 KB Created: 2020-08-06 05:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18f2b74eb59c312b98a9f1375f3431ca SHA-1: 51af8d056ddc2a555e499f17fba1b99f1aecca9b SHA-256: 72617caa3992893750219655175ec7f398bf08d97bb8544c995ed91941ddfd0c
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to a link farm. The primary redirector URL is 'https://ttraff.ru/pify?keyword=percy+bysshe+shelley+biography+pdf', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to the redirector URL, reinforcing its malicious intent.

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=percy+bysshe+shelley+biography+pdf In PDF document text
    • http://files.tricitiesfire.com/uploads/1/3/0/8/130874360/2062238.pdfIn PDF document text
    • http://files.moondewessences.com/uploads/1/3/1/6/131606550/785a4a90.pdfIn PDF document text
    • http://files.peggythomaswrites.com/uploads/1/3/1/4/131438313/xuzopatotobal.pdfIn PDF document text
    • http://files.alpinedesignsmt.com/uploads/1/3/0/7/130776368/dogipasero-wawusumi.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/1/0432/2865/9870/files/61063506151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6094/3258/files/2046787781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4924/6102/files/ledozolik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/22227956334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/87449567853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/92416654074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/pagomupukapuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0927/7095/files/70565355004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/27474574398.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_off00013307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13307 5660 bytes
SHA-256: 8b158f127e95840cce71e1c354492f9cfc7185afd5b2f0b2598697953a050278
font_01_sfnt_off00014645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14645 10956 bytes
SHA-256: 76f5f18641c32bc6984da5855195c9f8815bc36b37dcc65e3704e2560391729c

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