Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c127798ceee2c4…

MALICIOUS

PDF

41.6 KB Created: 2020-08-12 02:43:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e093c60f5a550b1252efc14e670ddd06 SHA-1: 7639038f64ed5066a03075e7899caacf80ab5337 SHA-256: 15c127798ceee2c40ad4faa10a85f378377fe1a5609fb1ba1568ce55d671f6ed
202 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though heavily obfuscated, also contains the same redirector URL and other URLs that appear to be part of a link farm designed to improve search engine ranking for malicious content. The primary goal appears to be directing users to malicious infrastructure under the guise of providing a PDF document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=barium+swallow+procedure+pdf In PDF document text
    • http://files.friendsofconnemarawest.com/uploads/1/3/0/9/130969565/0c41d.pdfIn PDF document text
    • http://files.luminousgci.com/uploads/1/3/2/7/132740384/gorinonotux-senotekunawe.pdfIn PDF document text
    • http://files.fancyherboutique.com/uploads/1/3/2/7/132740405/bufawunexukipoku.pdfIn PDF document text
    • http://vuvaxaxu.tarynartistry.com/uploads/1/3/0/7/130775531/98ffb.pdfIn PDF document text
    • http://files.carleyfitzpatrick.com/uploads/1/3/0/7/130739742/4306015.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/1/0436/3393/4496/files/83242862147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/dowedugemolew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1805/7885/files/busexolawopiluzezikoxif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6884/2393/files/vojanazova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2886/5446/files/69664449678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4173/4301/files/30752381798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7917/8142/files/discord_server_tips.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7140/6241/files/82972789192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/susomut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/5932150133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/14544361062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1208/8231/files/29449644191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/vetebunipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/10969458741.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E5 5444 bytes
SHA-256: 21887b711cdb489ec864a03bd1defbb7d43d431325014bb9ec299290d30d4019
font_01_sfnt_off0000775d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775D 9932 bytes
SHA-256: 6ce5cd462eb9301d5a690653f6d0d255b44a538a138ee4ad8655a9757560706c