Malicious PDF — malware analysis report

Static analysis result for SHA-256 82eda1864ea5ddd1…

MALICIOUS

PDF

74.2 KB Created: 2021-09-14 04:34:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a7732bb15e8e8657297d27622517697f SHA-1: b733ab25764127c1adb8ef10c9a8bf37eebd0d47 SHA-256: 82eda1864ea5ddd1d100ea0464886c5a7636c4fc550cf2f1068962519b0a1c95
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains numerous embedded URLs pointing to various domains, many of which are identified as part of a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a malicious intent to redirect users, likely for phishing or to download further malware. The ML classifier and ClamAV detection further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://foulardfotografando.it/file/7039571991.pdf In PDF document text
    • https://livermore.com/wysiwygfiles/file/laxirigawotobezipajam.pdfIn PDF document text
    • https://yumasri.com/assets/ckfinder/userfiles/files/wuguzurivolafuz.pdfIn PDF document text
    • https://charteriraq.ir/basefile/charteriraqir/files/67825068208.pdfIn PDF document text
    • https://istanbularicilikfestivali.com/upload/ckfinder/files/36119607253.pdfIn PDF document text
    • http://www.electricman.in/demo/frontend/web/uploads/files/72486146363.pdfIn PDF document text
    • http://veganogle.es/uploads/ckfinder/files/42315293514.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/320dfa38d2a356b0c5a40e224555bf1a/zejalitevejizori.pdfIn PDF document text
    • https://misbahelmudii.org/ckfinder/userfiles/files/98059012872.pdfIn PDF document text
    • http://artvideo74.ru/upfiles/files/22681215118.pdfIn PDF document text
    • http://dongtienlamnghiep.com/upload/file/47098798699.pdfIn PDF document text
    • https://himarco.ir/basefile/himarcoir/files/39032255916.pdfIn PDF document text
    • https://irantruck.ir/data/file/fozuloba.pdfIn PDF document text
    • http://morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e5dce79780---22160625997.pdfIn PDF document text
    • https://www.willmarshelter.com/ckfinder/userfiles/files/vewovavadowumoledevazu.pdfIn PDF document text
    • http://svb-volleyball.de/userfiles/file/sopumapuwoleg.pdfIn PDF document text
    • http://tangiahoang.com/skinkorea/Images_upload/files/35403925254.pdfIn PDF document text
    • http://www.toptehnik.si/images/nasuxefebezokivujeruw.pdfIn PDF document text
    • https://deltarealestate-eg.com/userfiles/file/ramuzikagemazejinod.pdfIn PDF document text
    • http://www.julietlandau.com/fckeditor/userfiles/file/runusofuvubisoju.pdfIn PDF document text
    • http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/pisovulifinomubapitovatub.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=voil%C3%A0+ai+artist+androidPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFEC 10260 bytes
SHA-256: f3a387e58ca4d1dbdcc318828b5082eb4adda4ea35e731b7bce2fbb069a118be
font_01_sfnt_off0000d6ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000eebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBD 16752 bytes
SHA-256: 2f8bab5e0dd46b90a2fe07fb4c59cf4048c08a9ff56b51050a132144de7e4bd3

Open this report in the interactive analyzer, or submit your own file for analysis.