Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe41abc8aac230a…

MALICIOUS

PDF

71.8 KB Created: 2021-09-30 18:04:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 75b3e21e80e30031e842776823b43021 SHA-1: bf9565e63ef11c9624c71344388d2241f25389b7 SHA-256: ebe41abc8aac230a4c529dc9c241cebea5c1611aff166587375e16a49cea6032
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or redirection scheme. Although no scripts were explicitly extracted, the PDF format and the presence of embedded URLs are commonly used to direct users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://medvor.ru/uplcv?utm_term=membuat+splash+screen
    • http://laureysnv.be/uploads/files/zebotev.pdf
    • http://groupelamiri.com/uploads/FCK_files/file/sumud.pdf
    • http://palami.by/images/file/zezopagudamatuzedifaxe.pdf
    • http://orderkiwicafe.com/uploads/files/79008583534.pdf
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/8354058480.pdf
    • http://poornasreehomeoclinic.com/ckfinder/userfiles/files/15534756161.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141cec9abd48---88509108212.pdf
    • https://pre-www.bridge-academy.com/uploaded/ckeditor/files/wuxuzavoxijifov.pdf
    • https://harom.ro/files/file/gutakumekakugofufeledawa.pdf
    • http://peoplefineart.com/assets/202109/files/20210914182050907825.pdf
    • https://laetitiabernard.fr/images/file/59714119558.pdf
    • http://debrecen.varosom.hu/userfiles/files/lazipawobinil.pdf
    • http://netisiletisim.com/guvennet/resimlerfiles/98892022937.pdf
    • https://blugarden.eu/file/vamujimofu.pdf
    • https://havilahbuilders.com/userfiles/file/91032589016.pdf
    • http://nwatchonline.org/userfiles/file/semujezogirazakezonogofit.pdf
    • https://www.hosotte.com/ckfinder/userfiles/files/fefiwar.pdf
    • https://cebrium.ssnn.ro/images/55383924145.pdf
    • https://trungtamgiasuhcmmq.com/uplaod/quangtri/files/bibalawuvarepowezowasunum.pdf
    • http://pn-tech.net/userData/board/file/78651041472.pdf
    • http://mtreurope.com/ckfinder/userfiles/files/vapadinibuvipilazidiwo.pdf
    • http://0975811252cool.linker.tw/files/34151231750.pdf
    • http://patroha.hu/file/92119299419.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b311.bin
392aa3ec442317be6d5a48de59330fcd0e4c316bbb7c49fd5f7b74f78d85c396		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB311 18112 bytes
font_01_sfnt_off0000e168.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE168 16792 bytes
font_02_sfnt_off0000f97f.bin
999f05da4584b50e3d7f843bc1aa4474e69409ac4b336ab20a585885c6bc898c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF97F 10660 bytes

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