Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d3e0f77b9d80e9…

MALICIOUS

PDF

77.7 KB Created: 2021-06-13 23:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: dee3fda46aca0d36f0c854771a242752 SHA-1: 5c16fb0f1b9d74002e64ff5a781621c6bb318186 SHA-256: b0d3e0f77b9d80e9e42f225a863296c241502482c291c7b3929de6b8df8c1772
196 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains numerous links to compromised websites, including WordPress upload directories, suggesting it's part of a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains references to 'Gta 6 download in mobile', indicating a lure for a popular game. No scripts were extracted, but the overall structure and linked URLs point to a phishing or malware distribution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cructi.ru/uplcv?utm_term=gta+6+download+in+mobile PDF link annotation
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/20a4d2f480d3afc3f89249f2ff01cf2a/93327520169.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/pcbflgfhqg24upacmdflscnq2c/zirugulizatomibavuke.pdfIn PDF document text
    • http://hytechplus.com/userfiles/file/zatav.pdfIn PDF document text
    • http://luckdidea.com/ckfinder/images_store/files/vaxesademezavutakosopoles.pdfIn macro / runtime command snippet
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/6f46de4d372a048ccd3da55388c15b75/92053109130.pdfIn PDF document text
    • http://sashtraayurveda.com/ckfinder/userfiles/files/dovobotime.pdfIn PDF document text
    • http://hotelgiottotorino.com/userfiles/files/42021926027.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e32a8452dd---pijida.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097299ea11f8---4961740497.pdfIn PDF document text
    • http://bkdesign.ee/userfiles/file/molikowagaxanonoge.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/lodigebomazukibiru.pdfIn PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/20048655477.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/77434855841.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/894d024bbfbd1c6305b4a0f21d5ac009/14837569720.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1609859e2ec5a1---xifebodin.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/hlpolro1he908ndn1v2nu3ahjb/2945656748.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/ad51712aa6ac81d983c07db90b16e231/68699455349.pdfIn PDF document text
    • http://bebelino.ru/userfiles/file/20853030521.pdfIn PDF document text
    • http://hytechplus.com/uIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f38f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38F 5112 bytes
SHA-256: 4eb0a3bc34e2148e4aa9af3e04da15d8922c7cbfc348eaceca4e35d3360a393c
font_01_sfnt_off000104f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F6 10936 bytes
SHA-256: 46902b0b59722f793386e9959eb1fc5888f9121b83e5e228128c7c1d5c7a018c

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