Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c4d99d11a0b0d50…

MALICIOUS

PDF

46.2 KB Created: 2020-08-17 15:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf6110da0265e8258ac15272e1226898 SHA-1: 7a736756745bc96e4bff2e65780f4e0dd8e97054 SHA-256: 6c4d99d11a0b0d50ec3edca1e2ea1f228103e5e659162204eed9653e57911f20
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body text, though partially corrupted, includes the same search query found in the malicious URL, suggesting a phishing or scam lure. The presence of multiple external PDF links, some benign and some potentially malicious, indicates a link farm strategy to distribute malicious content. The ML classifier strongly flags this PDF as malicious.

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=aws+cloudformation+infrastructure+as+code In PDF document text
    • http://files.kpeggphotography.com/uploads/1/3/1/4/131437064/68c4f2edbe8048a.pdfIn PDF document text
    • http://files.weddingceremonypro.com/uploads/1/3/0/9/130969885/165cdfd2eb50ae.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/1/0433/0687/7080/files/xigorekotat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6945/7063/files/sokiwowoxojagux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8670/8889/files/51503893876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/71662792765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2589/9421/files/xojamulilokekur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/fusidekinolixod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0224/6814/files/a_plastic_ocean_documentary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/gimp_user_manual_2._8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/57971191114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/caterpillar_3208_specifications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/13934686647.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 4

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_off000077f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F8 5248 bytes
SHA-256: 605c9357424d24ac10da23d2f2bcc85cae43e85ffd6a6a2ca896f77596db7b51
font_01_sfnt_off000089bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BB 9996 bytes
SHA-256: 936adafcdf0240abc2f00f68b2f8bc9a6fe3e30f8cd05fbe3446f70dbcfe2b5d

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