Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ecb68d6086953c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-24 21:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a5798700e2e38e33977daf5be585f1a SHA-1: ac1e399be504ae18beb63e13c61e602fad672024 SHA-256: c1ecb68d6086953ca746e45d537768d2d23f991afc197c55cd365731c4cbc2d9
202 Risk Score

Malware Insights

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

The PDF contains a lure for a fake invoice or payment, as indicated by the 'SE_INVOICE_LURE' heuristic. It also contains a malicious redirector link to 'https://ttraff.ru/pify?keyword=free+painting+estimate+template+excel', which is flagged by 'PDF_MALICIOUS_REDIRECTOR_LINK'. The document also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, as noted by 'PDF_SEO_LINK_FARM'. No scripts were extracted from this sample.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=free+painting+estimate+template+excel In PDF document text
    • http://files.diled.eu/uploads/1/3/0/7/130775968/e21cf8fd1f16e4.pdfIn PDF document text
    • http://files.athan.com/uploads/1/3/0/8/130814169/tesor_gaviwe.pdfIn PDF document text
    • http://zurexunus.wayinn.com/uploads/1/3/1/4/131409090/pupuvonepanebig.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/1/0431/6856/3355/files/jolijasol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8168/5406/files/java_project_source_code_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5370/3577/files/61145673527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/sing_your_face_off.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/3992/4900/files/dunarem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6664/9750/files/25182302236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/kobomizig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4458/8959/files/jesibeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4882/files/nadeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/95341073106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/aprender_a_empreender.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 3

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_off00006cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEC 5276 bytes
SHA-256: 3ebe3ca8a065440aa9c74e26abfe3e2960c636badbd746c7ee2d126577df20cb
font_01_sfnt_off00007ec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC9 10128 bytes
SHA-256: c5d30d97e43ed992fbb9b69704e80590b4f1515ac974f8f55f1fdecf332e2dec

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