Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0e243c77bd21f0…

MALICIOUS

PDF

41.3 KB Created: 2020-10-05 12:20:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c113c8a71e3ddd9383d45028b054a0a7 SHA-1: 1628943e1d7a94842083234dd688588e2292b097 SHA-256: 3a0e243c77bd21f09e62d9a27cac640b3555bed74ad2c22afb2587e18a48d526
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector infrastructure at https://cctraff.ru/strik. The presence of this malicious link, combined with the ML classifier flagging this PDF as malicious, indicates a likely attempt to redirect the user to a harmful site. The document body itself is heavily obfuscated and appears to contain the malicious URLs.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cctraff.ru/strik?keyword=can+you+feel+the+love+tonight+chords+piano+pdf In PDF document text
    • http://files.movitzgroup.com/uploads/1/3/1/8/131857580/lisakikiru.pdfIn PDF document text
    • http://nibuxar.saasdssummerprograms.com/uploads/1/3/0/8/130874330/foxavagos-bojuwelege-juzebodut-nubowar.pdfIn PDF document text
    • http://laxur.northbranchwoodworking.com/uploads/1/3/2/6/132680937/lunur-tokutitegetoje-latabetumake-merodi.pdfIn PDF document text
    • http://files.ipray4u-intl.org/uploads/1/3/1/6/131606057/298567.pdfIn PDF document text
    • http://files.emeliewaldken.net/uploads/1/3/1/8/131871488/korazabikopamugo.pdfIn PDF document text
    • http://minemugez.tanimaherphotographs.com/uploads/1/3/1/6/131606968/19eaf6bc9e.pdfIn PDF document text
    • http://nurojegi.rana-tarabishi.com/uploads/1/3/0/8/130814328/7a21bf77.pdfIn PDF document text
    • http://pawak.menasgerovei.lt/uploads/1/3/0/8/130813821/3735515.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/1/0434/4204/5090/files/batawuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/walafokobus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2906/5639/files/oracle_pl_sql_programming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2447/0175/files/icd_9_code_for_exercise_intolerance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7098edf0-f88f-43ad-97c4-c265fbbec595/56474105662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/630fb605-3e56-44ef-85bb-4e0cc22023d9/43169357972.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_off00006264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6264 5484 bytes
SHA-256: 81a72a0ad68b26f2a92bd57c2e194a796953c6c01bed45d92af79d34fe84f912
font_01_sfnt_off0000751b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751B 10088 bytes
SHA-256: 5eabdec5abf963f55491c9474cf16cd30ff36526a667a3bc2cbd7dd4a3c2300d

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