Malicious PDF — malware analysis report

Static analysis result for SHA-256 2167ab9d0a0a3e60…

MALICIOUS

PDF

85.8 KB Created: 2021-09-17 17:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 2a6183af4b6bf1fd87d7774ac81a58fd SHA-1: 4ec50716c44f78ea0a7a1895d763947bd6f37ed8 SHA-256: 2167ab9d0a0a3e6020d344c7c458ef9cec9d416f3fbea662c450a1d05f10a3a3
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many of which point to disposable hosting and appear to be part of a link farm designed to redirect users. The presence of these links suggests an attempt to direct users to malicious websites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://garglob.ru/uplcv?utm_term=free+video+editor+app+for+android PDF link annotation
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16132aa220bfe0---34347614438.pdfIn PDF document text
    • https://ismet.com.br/ckfinder/userfiles/files/rudekewajiwaz.pdfIn PDF document text
    • http://gourmethousemacau.com/UploadFilesfile///38968302295.pdfIn PDF document text
    • http://sooam.com/files/fckeditor/file/55682664461395ba27fb31.pdfIn PDF document text
    • http://pietrek.com/MARCUS/files/file/30979449289.pdfIn PDF document text
    • http://polenes.cl/userfiles/file/mabefilokukajabib.pdfIn PDF document text
    • https://fibaquitaine.fr/cebatrama/userfiles/files/dimilinuwa.pdfIn PDF document text
    • https://bipalisdemo.dashindonesia.com/userfiles/files/29997583755.pdfIn PDF document text
    • http://thaihotelsale.com/FileData/ckfinder/files/20210914_B072E131829DE46B.pdfIn PDF document text
    • https://daulte.com/ckfinder/userfiles/files/xepofa.pdfIn PDF document text
    • http://wefocusdesign.com/upload/files/lujurubi.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/pebuvukesudusetus.pdfIn PDF document text
    • https://adesso-moosburg.de/images/file/12867906421.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe43ae820d---pizofirejigo.pdfIn PDF document text
    • http://ohmytour.kr/FileData/ckfinder/files/20210905_5ED3C77B990AFB6F.pdfIn PDF document text
    • http://diplomat2014.ru/ckfinder/userfiles/files/wozapora.pdfIn PDF document text
    • http://blesk-stroy.ru/userfiles/files/60173676289.pdfIn PDF document text
    • http://sumisaedu.com/FileData/ckfinder/files/20210905_B76753AAD6B970C5.pdfIn PDF document text
    • http://gro-felix.si/uploads/wewojasowanita.pdfIn PDF document text
    • http://carbontuning.ru/file/pefoferas.pdfIn PDF document text
    • https://rosebankprimary.co.za/inc/ckfinder/userfiles/files/88048776927.pdfIn PDF document text
    • http://colokit.thienlonggroup.com/Images_upload/files/60224453008.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_off0000ecac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAC 10320 bytes
SHA-256: 147b2a7ccbbff38b07b974ad3db9ce8ed1f01cd1de9be5c24f76f6efe1e99b3d
font_01_sfnt_off00010409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10409 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C1B 17704 bytes
SHA-256: 41c653e2a1882c1187cc944a11a2c20b877ec7dbaf7dc6f3044b361d0736c51c

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