Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d22794535bed67…

MALICIOUS

PDF

78.8 KB Created: 2021-09-18 08:37:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 96bc8fc50609271769b3d7cd7b09981b SHA-1: 5e51983834498583a2d8e230b2fe73fadefbf07b SHA-256: d0d22794535bed67b20abb74e15cd4abadb3f1aaeeb51cb366bb434a89602f47
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains a large number of embedded URLs pointing to various domains, suggesting a link farm or phishing lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a strategy of using many distinct, potentially disposable hosts to distribute links, which is a common tactic for evading detection and maximizing reach for malicious campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://archism.ru/uplcv?utm_term=shakti+26th+march+2021+full+episode PDF link annotation
    • http://princeverma.in/uploads/files/pabebubalozon.pdfIn PDF document text
    • https://alpasol.e-giant.net/upload/files/vedanosisowikovavexixixij.pdfIn PDF document text
    • http://globalroomplus.com/bot/ckfinder/uf/files/44910249568.pdfIn PDF document text
    • http://elisa5888.com/shopadmin/upload/files/75322863245.pdfIn PDF document text
    • http://telegid.tv/userfiles/files/motozexakuwireziro.pdfIn PDF document text
    • https://parisnordmedical.fr/docs/file/garubunekilu.pdfIn PDF document text
    • http://mmbc.cz/_data/user_files/file/gobikapovosazekitozalunaz.pdfIn PDF document text
    • https://caror.hu/ckfinder/userfiles/files/29917470772.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/29c36f5e3f031cefe6ebf119bed72daa/konazududokojegixuvikupol.pdfIn PDF document text
    • https://jecoexports.com/ckfinder/userfiles/files/15321954787.pdfIn PDF document text
    • https://hoangnhataudio.vn/media/files/62069868187.pdfIn PDF document text
    • http://hyundaiokla.com/uploads/files/98571002104.pdfIn PDF document text
    • https://infotechsystemsonline.com/ital/www/img/file/46907758093.pdfIn PDF document text
    • http://dfwsedan.com/nbloom/fckuploads/file/bomodekalavuki.pdfIn PDF document text
    • https://burstallconrad.com/editor_files/file/sofimanexexom.pdfIn PDF document text
    • http://rosniyom.com/userfiles/files/pominu.pdfIn PDF document text
    • https://shevtsov-art.com/uploads/files/18797495984.pdfIn PDF document text
    • http://quiltingacademy.com/fckeditor/userfiles/file/rufedawitami.pdfIn PDF document text
    • http://www.web-globus.de/ckfinder/userfiles/files/36964364547.pdfIn PDF document text
    • http://everest-c.ru/ckfinder/userfiles/files/duxuxu.pdfIn PDF document text
    • https://ww150001.linebot.net/upfile/files/20210901140008.pdfIn PDF document text
    • http://ipsaix.com/ckeditor/ckfinder/userfiles/files/94593478896.pdfIn PDF document text
    • https://emotionalgift.youngzonejewelry.com/ckfinder/userfiles/files/gotepepisugefejivubano.pdfIn PDF document text
    • https://annekienlen.fr/imagesfile/nagakofixefanelugezomo.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_off0000ca87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA87 17672 bytes
SHA-256: 474805a7dd2d4ef749911e9a513de246fb593148b14ead041ab7cf3dda40cdb4
font_01_sfnt_off0000f850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF850 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11067 11508 bytes
SHA-256: f7fe34f4f1b1b94c792ff3fb6b964a5bb60c0bb66c2c4966961172a5b5cd08d9

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