Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c6f42cf59d2ce66…

MALICIOUS

PDF

42.6 KB Created: 2020-08-10 11:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e31f278cf12b03acef5be72a4c205cd9 SHA-1: e8c63794424cde921c87aef142d23ee803265b3c SHA-256: 9c6f42cf59d2ce66c656cb5519a16ce103169789bac2a3e154864c48b42ff610
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as a utility for PDF editing, with the primary malicious link being https://ttraff.ru/pify?keyword=best+pdf+reader+and+editor+for+linux. This heuristic firing indicates the document's intent is to redirect users to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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=best+pdf+reader+and+editor+for+linux In PDF document text
    • http://files.knotperfecthandmadefurniture.com/uploads/1/3/0/9/130969452/5713374.pdfIn PDF document text
    • http://wasukusu.mxchronicles.com/uploads/1/3/1/8/131871674/8623265.pdfIn PDF document text
    • http://sajiwuluk.cashfromtreasures.com/uploads/1/3/2/6/132696030/6543197.pdfIn PDF document text
    • http://files.flower-junction.com/uploads/1/3/0/8/130874627/cd843709e.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/1/0434/5089/2440/files/rinukiravabipawulipeleme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/roxelona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/50469012406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/59725831126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0890/9734/files/vofofewudobixatem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1908/3677/files/63569118395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/beturidabexezutibonuwulin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowelikuzamutaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/muzuzezebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/baxalivorixederisojavulal.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_off00006895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6895 5152 bytes
SHA-256: 9c2f62dc254dfb00768fb919ae839c0ed1d89583410e69df5c44cc3734eeaa67
font_01_sfnt_off00007a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A35 10344 bytes
SHA-256: fb88c3cedfbaca5c7b13719b0e38c4aad9dfcde2493e784bbf18d2cd79ca98fb

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