Malicious PDF — malware analysis report

Static analysis result for SHA-256 292860e5f44ebe46…

MALICIOUS

PDF

80.2 KB Created: 2021-09-19 22:42:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 59834a545522d2a3f7de8c232e70d787 SHA-1: f2155eccc040273eaa8d0c1241716260e252d65e SHA-256: 292860e5f44ebe46fe62e20b14cee613f84b4352c5da3121a1a77628f83df137
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or malware distribution campaign. The `utm_term` parameter in one of the URLs indicates a potential tracking mechanism for user engagement with lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://allytemp.ru/uplcv?utm_term=veer+movie+full+hd+download+1080p PDF link annotation
    • https://ijtm.in/userfiles/file/wopetaduratuwar.pdfIn PDF document text
    • http://idrogastermoclima.it/Utentifile/FCKPage/file/bizomolujixewuwekagas.pdfIn PDF document text
    • https://daynexweb.com/upload/ckfinder/files/tixupusekedepumedubonux.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/jolipexesex.pdfIn PDF document text
    • http://dalnoboy.net/data/filestorage/upload/files/pamabofapowavewe.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/sufudewixulovagadoreket.pdfIn PDF document text
    • https://stmpallet.com/ckfinder/userfiles/files/ragiman.pdfIn PDF document text
    • https://noihoithanhtuan.com/media/ftp/file/bemepuvebivoben.pdfIn PDF document text
    • https://standsimulator.com/ckfinder/userfiles/files/kitudazafot.pdfIn PDF document text
    • http://mofrantech.com/userfiles/file/zajadokosora.pdfIn PDF document text
    • http://cdio.vn/uploads/userfiles/file/sanibisujarezoto.pdfIn PDF document text
    • https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/lusanarafudero.pdfIn PDF document text
    • http://gajagotour.com/UserFiles/file/sozekogipo.pdfIn PDF document text
    • http://tagsu.com/attachments/fckattachments/file/tupemuzugumibajomifuz.pdfIn PDF document text
    • http://architettotamborra.eu/userfiles/files/doxodasad.pdfIn PDF document text
    • http://schokozentrale.de/idata/nakavamafufokizonelejalo.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/9ac1dc798f01fcd177bc3333322e332c/68443323049.pdfIn PDF document text
    • http://gardatrans.com/content/Files/wodaw.pdfIn PDF document text
    • https://crc.creativechange.net/ckfinder/userfiles/files/dotasirolat.pdfIn PDF document text
    • http://aadcnfgl.netsociality.com/upload/files/potijiguzupafixe.pdfIn PDF document text
    • https://digitaldaya.com/imagenes/file/lidujonesofunuvez.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_off0000d37b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD37B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8D 17580 bytes
SHA-256: 1130acf45b82d630d3ba4023dca410353a28366cc2324f4df312f8d52ccc48b4
font_02_sfnt_off0001195f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1195F 11100 bytes
SHA-256: 0317de357be73a970708986f3084b992db8c338261b8298f1a8ac44cc92d38fc

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