Malicious PDF — malware analysis report

Static analysis result for SHA-256 000e53c1db068e82…

MALICIOUS

PDF

68.9 KB Created: 2021-03-23 21:24:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 94a420e68eb42185b9d3731c61096e47 SHA-1: 50c89e3b10e43efa50c0266041ca75980932f9f4 SHA-256: 000e53c1db068e82d5cde7d7195333924430630581982fd9708dc8bf7254aeed
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to renting a sod cutter, directing the user to a suspicious URL. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm on disposable hosting, suggesting a phishing or scam operation. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classification strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lozipotod.ru/wix?keyword=manual+sod+cutter+for+rent+near+me PDF link annotation
    • https://cdn.sqhk.co/puxedimuwo/diehijb/wepizenezi.pdfIn PDF document text
    • http://runojiwum.getenjoyment.net/pesunisilokir.pdfIn PDF document text
    • https://cdn.sqhk.co/nadetajagupe/ietKjaK/dimasu.pdfIn PDF document text
    • https://cdn.sqhk.co/rujojumex/if5jihj/wordo_to_do_lists_tasks_reminders_installer.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/yamaha_rx-v673_manual.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/is_kaneki_dead_in_tokyo_ghoul_season_3.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/N0BHgfu/89670899491.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fcf2f1e-6161-4e58-8ead-2c72bed1e9fa/biradujututab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b0ecb93-8b97-4c2a-8e03-60750152e9a3/immanuel_kant_critique_of_practical_reason.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e07826c0-9d2c-481b-a56e-db152f408bf9/zurozisanokimivulujif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd36bd3e-75dd-4d23-8fee-a40149837ba2/segarepemebisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a8a7f88-e1e6-4d08-b58f-e1f2dcb7137d/56734431834.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/89816725488.pdfIn PDF document text
    • http://duribolatajofa.atwebpages.com/their_eyes_were_watching_god_symbols_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be67341b-6120-49b5-9bb0-bf69d7455d93/south_indian_vegetarian_cooking_videos.pdfIn PDF document text
    • http://fadezanunadafik.myartsonline.com/7195772156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13468c33-94cd-4ce6-b655-a02826b10e56/64898164191.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7000e03-6109-4a59-ae30-d723e38c021e/tivovaxab.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF55 5172 bytes
SHA-256: 4e4dfcebf12ca6da33db4983e40b411e17f25bd7db7bd201ac67b1db3ed4b1f2
font_01_sfnt_off0000e0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E2 11064 bytes
SHA-256: efe2899401876523de2b00b42f597c5f53489fbd78374c9d0823d61351757b9b

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