Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aa8ad2fe8e5f7c7…

MALICIOUS

PDF

71.2 KB Created: 2021-09-17 00:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 6483648e5f37dd154f96a5cbdf4110fa SHA-1: 689371db54e24d70072f44370381b3fce9092fba SHA-256: 6aa8ad2fe8e5f7c79259beb257232b32baea5232e9bc3b5aa0e0ce9c31edde07
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous external URIs, including one with a 'download gta cheat apk' UTM term, suggests a phishing or scam lure. The PDF's structure and the embedded URLs point towards it being used to distribute further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://smidgel.ru/uplcv?utm_term=download+gta+cheat+apk PDF link annotation
    • https://faresaldabbous.com/uploads/file/90570400387.pdfIn PDF document text
    • http://xn--o39a91gvwm83kbsn.com/FileData/ckfinder/files/20210907_7A0FF4C36D204DE1.pdfIn PDF document text
    • http://santeh.md/img/files/ruvatuwerofitugobogapufi.pdfIn PDF document text
    • http://na3.it/misc/file/sifegakaxilol.pdfIn PDF document text
    • https://grup-insaat.com/userfiles/file/13417512984.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a2d2fbd234---74577389924.pdfIn PDF document text
    • http://duquenne-moteurs.fr/webroot/upload/files/zobuw.pdfIn PDF document text
    • https://fptica.ru/images/file/55840683909.pdfIn PDF document text
    • http://aias.pnu.ac.th/ckfinder/userfiles/files/94352833760.pdfIn PDF document text
    • http://synowka.pl/galeria/file/sezapejarade.pdfIn PDF document text
    • http://gainliving.com/upload/editor/file/repag.pdfIn PDF document text
    • https://architektor.ru/uploads/file/57525907157.pdfIn PDF document text
    • https://aicpwdosaeast.com/ckfinder/userfiles/files/30837623516.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/pa75it6aal0ja2be7bt3foe0v5/mabukunafuri.pdfIn PDF document text
    • https://zahidnawaz.com/UploadedImages/image/40532382718.pdfIn PDF document text
    • http://cinebuzz.be/uploads/userfiles/files/27257172102.pdfIn PDF document text
    • http://gmkms.net/upfile_editor/2021/files/tikatafogi.pdfIn PDF document text
    • http://makesrealsense.com/ckfinder/userfiles/files/13266876513.pdfIn PDF document text
    • https://equipelec.fr/ckfinder/userfiles/files/48141077283.pdfIn PDF document text
    • http://manpukulivermore.com/uploads/files/rewegupiliwo.pdfIn PDF document text
    • http://kagoshimakojintaxi.com/userfiles/file/fumedirulisomo.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://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_off0000b639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB639 10612 bytes
SHA-256: fb7be6c73a8eceb800205fdfe28adca09beeee2ccb0a853cba43b80e2e74057c
font_01_sfnt_off0000ce4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65F 16028 bytes
SHA-256: 3bccf3d67897178388e0572f33d44c679ab5d3124b72c932cfb428c07d17ba2e

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