Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ed6dfb5afb908c…

MALICIOUS

PDF

82.1 KB Created: 2021-09-09 17:06:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 3078e9addb263870be7e81e4340135f7 SHA-1: 20ace23d3995dd216d20661595a7d240e7bea082 SHA-256: d7ed6dfb5afb908ce3fbda232621ba39d4bc710a07b4b0c6500cf1924be64962
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://pixomot.ru/uplcv?utm_term=mugen+train+live+stream PDF link annotation
    • http://vinmexindia.com/uploads/60148981900.pdfIn PDF document text
    • https://nhabe.com.vn/ckfinder/userfiles/files/wujenomisuwemelasubi.pdfIn PDF document text
    • http://dblbtech.com/userfiles/file/18810628780.pdfIn PDF document text
    • http://bjdfszwy.com/filespath/files/20210907222200.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/070920265102.pdfIn PDF document text
    • http://211.129.1.225/system/ckfinder/userfiles/files/xibedodigarepuzigesusi.pdfPDF link annotation
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/45032414358.pdfIn PDF document text
    • http://www.hz-kontejnery.cz/ckfinder/userfiles/files/xofedomagizomedijoxo.pdfIn PDF document text
    • http://girc.ncue.edu.tw/ckfinder/ckfiles/files/5526781214.pdfIn PDF document text
    • https://vico-real-estate.com/ckfinder/userfiles/files/davutokegewevorelonadaso.pdfIn PDF document text
    • http://casaperugia.fr/userfiles/file/47351478176.pdfIn PDF document text
    • http://elcwma.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/80333068208.pdfIn PDF document text
    • http://liweisteel.co.th/ckfinder/userfiles/files/19668722680.pdfIn PDF document text
    • http://dorinhawear.com/admin/fckeditor/editor/filemanager/connectors/php/fckeditor/editor/filemanager/connectors/php/userfiles/file/17889264753.pdfIn PDF document text
    • http://hanboo.cn/Uploads/file/2021090807051570554.pdfIn PDF document text
    • https://eko-briketes.lv/userfiles/files/bixosejaja.pdfIn PDF document text
    • https://tssch.in/tssch/application/admin/uploads/file/62181874581.pdfIn PDF document text
    • http://warwick-ems.org/userfiles/file/kapavebe.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/1eog9ub6bocduorinbt7uedvbc/21493097927.pdfIn PDF document text
    • http://autoscuolepintozzi.it/userfiles/files/gogavotiloteboj.pdfIn PDF document text
    • http://nilesk.com/userfiles/file/42890890128.pdfIn PDF document text
    • https://kop-trans.pl/uploads/userfiles/files/pinexefapumedaxud.pdfIn PDF document text
    • http://sushinamu.com/uploads/files/90159150338.pdfIn PDF document text
    • http://huiking.cn/uploads/file/040133039259.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/161300c5348924---vifepazopuxijariz.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_off0000db9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f3ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AC 18336 bytes
SHA-256: 1ba7aa8e531dfa5ce10dfb34795bfbdbe18ed543cb915e9db0abc7df253e2034
font_02_sfnt_off0001239f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1239F 10488 bytes
SHA-256: e9cc9c7ac8232c972dfb6b54b9902eeb5f66743366032a6bfe6d8d7b2e685a21