Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ef13e1d99b3347…

MALICIOUS

PDF

123.4 KB Created: 2020-08-12 18:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9cbf087e53327b748ee3c594c29ae8b2 SHA-1: c003a7120a899efab83d0e58cc46b1f21e26eb04 SHA-256: e1ef13e1d99b334715b5d10809be1b5bd67220f842c79caf9c1de3118690304e
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector infrastructure at https://ttraff.ru/pify. The document body, though heavily obfuscated, contains a reference to this URL, suggesting the primary intent is to redirect the user to malicious content. 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=the+ultimate+rpg+character+backstory+guide+pdf+tg%252F In PDF document text
    • http://dititirep.suffolktrainstation.com/uploads/1/3/1/0/131070786/1232788.pdfIn PDF document text
    • http://files.gatorrughookinggroup.com/uploads/1/3/0/7/130739910/zebevodoju.pdfIn PDF document text
    • http://files.safetygradelicensure.org/uploads/1/3/1/6/131606758/7542717.pdfIn PDF document text
    • http://files.mrlum.com/uploads/1/3/0/7/130775596/3461966.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/1/0432/6939/0500/files/pravana_chromasilk_color_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/pdf_ke_word_online_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/tavaropuxokot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2513/6797/files/4773943125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8484/1124/files/bumunezavirirexigos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/40809151175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9255/5416/files/rolutuxima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5578/2817/files/vagunexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/xugofozozowepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/jofutuzetotaxeledaze.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000193de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x193DE 3524 bytes
SHA-256: 5817a0261914d9df31bb081ec9b9156d673e4fc017ddb1002653bab4a1f32ee4
font_01_sfnt_off0001a07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A07C 5860 bytes
SHA-256: ff42750104399e40ccf9403aac06dd6baa76dba9423cc15504336a08351d8d4f
font_02_sfnt_off0001b44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B44E 13928 bytes
SHA-256: 9297db6bf0db3a10ec217fe9255bf723074629254edfc8a3b9eaaf18321922d6

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