Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ebd16baf0d2a16b…

MALICIOUS

PDF

47.0 KB Created: 2020-08-07 12:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fc4fe7dc6aba1316b1a18820f38523f SHA-1: 25fd87c0f4fd738e427041f99e0e4944110b36f1 SHA-256: 5ebd16baf0d2a16bdaf14f57eb34b61cf1c4b3a7bfd8371eac53379347a17e54
194 Risk Score

Malware Insights

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

The PDF document contains numerous links, many of which point to a redirector service (ttraff.ru) that is associated with malicious activity. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=learning+styles+pdf+2020', indicating a phishing or scam lure. The presence of many Shopify-hosted PDF links suggests a link farm intended to improve SEO for malicious content.

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=learning+styles+pdf+2020 In PDF document text
    • http://files.jemun.net/uploads/1/3/1/4/131437538/zimef-pafitakimu-kazuwapofi-xefulogekasa.pdfIn PDF document text
    • http://files.logancyclingclub.org.au/uploads/1/3/1/8/131857717/008ffe57.pdfIn PDF document text
    • http://files.eastcoastvintagemx.com/uploads/1/3/0/8/130814466/1338480.pdfIn PDF document text
    • http://files.nyegirlboutique.com/uploads/1/3/1/8/131871817/078a2c8860f026.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/1/0431/1659/3312/files/zexezopemamivurifelilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9930/7678/files/gazeririgeduwabifopoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5266/0901/files/famoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7448/5401/files/dallas_cowboy_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0644/3163/files/71720920462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0952/2339/files/xolunatuwimovemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/1278623472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/99045720647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/13974759734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9038/5823/files/40383804659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/jadojitukuvozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/paxasedivulijuvunirerola.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7871 5524 bytes
SHA-256: 5ee5d864e9c5912b43c4829993e2ad25647673d68b44bb10a3ae84305b42bee4
font_01_sfnt_off00008b5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5A 10444 bytes
SHA-256: 516fa128615ab6ab1c544d5b0aa77f273a3e49f72e594facb8275e133ad52da5

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