Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ed3f651a4cd351…

MALICIOUS

PDF

82.5 KB Created: 2021-09-18 14:15:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e137d2039592eaa804da30156de43c08 SHA-1: e6689482776328aa65f60380587b78ea6a3b6b73 SHA-256: 10ed3f651a4cd351406678905eaf8ddac04c2d022c3201525c0b751ac78f3c0b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 http://ultraljud.nu/bild/files/gomevulavawepopetod.pdf In PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/rnjmqc5qhhedfmuhcd8k2ct6la/zoropelinolato.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131f40188c4e---dowumodutapajatol.pdfIn PDF document text
    • https://happycolaborativo.com/uploads/files/tilubeginizisexolefepi.pdfIn PDF document text
    • https://trungtammatnamviet.vn/upload/files/gawegosojewakexibajepaw.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/94136869773.pdfIn PDF document text
    • https://ketdoanbus.com/webroot/img/files/65776413601.pdfIn PDF document text
    • https://karlschool.org/uploads/files/202109030951162245.pdfIn PDF document text
    • http://superlitefan.com/uploads/files/30777970046.pdfIn PDF document text
    • http://starwindows.ie/ckfinder/userfiles/files/41938816376.pdfIn PDF document text
    • http://avandcie-energy.com/ckfinder/userfiles/files/bavolijarilugejuzaguz.pdfIn PDF document text
    • http://www.nachtruhe.info/up/files/figefudazotepowesoram.pdfIn PDF document text
    • http://tentimesneedlehill.com/UPFILE/userfiles/files/68820722465.pdfIn PDF document text
    • https://soudurelausiere.com/upload/editor/file/60611502209.pdfIn PDF document text
    • https://jokerprod.net/userfiles/file/fuvunifegeloluwuxegufut.pdfIn PDF document text
    • http://biondiairsystem.it/userfiles/files/76490991796.pdfIn PDF document text
    • https://ezokniga.com/uploads/file/kozatimegoti.pdfIn PDF document text
    • http://saluteebenesseresas.it/userfiles/files/39653771402.pdfIn PDF document text
    • http://kahounova.cz/userfiles/file/66217110318.pdfIn PDF document text
    • https://bednidhitraders.com/userfiles/file/1325584232.pdfIn PDF document text
    • http://lamardaegu.com/upfile/user/file/12642461309.pdfIn PDF document text
    • http://studiopol.com/userfiles/files/82732378868.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=csr+racing+2+hack+mod+apkPDF link annotation
    • 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_off0000dde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f5f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F9 17520 bytes
SHA-256: c515de4131ad78c8aac429a8c49f1efed01d9d869664f1937f22096b574de48d
font_02_sfnt_off00012343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12343 10928 bytes
SHA-256: 08547ac7f9411ce83271fada7c77477773592a8f22a015d92e6c0c0bb419d6c8

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