Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48498e964079190…

MALICIOUS

PDF

69.6 KB Created: 2021-09-16 16:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 9d076675b003227a871f81fa74b6ac7c SHA-1: c3f280c181a4193c206f8bac1d9c87bc251a3a40 SHA-256: d48498e964079190919de80363def354a85c222024004cd875da30a67cf8af8b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely involving social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pistant.ru/uplcv?utm_term=wpa+wpa2+wifi+hacker PDF link annotation
    • http://nail-free.com/ckfinder/userfiles/files/8977113855.pdfIn PDF document text
    • https://villadelauca.com/userfiles/file/zilaz.pdfIn PDF document text
    • http://studioaba.net/userfiles/files/5056879585.pdfIn PDF document text
    • https://fizjolech.pl/userfiles/file/24416139702.pdfIn PDF document text
    • https://prolocolidodisavio.org/ckfinder/userfiles/files/lasix.pdfIn PDF document text
    • https://yam-token.com/business_school/uploads/file/wikafexekuxil.pdfIn PDF document text
    • http://asorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rigegoxitixase.pdfIn PDF document text
    • https://kuepancong.com/contents/files/63962896021.pdfIn PDF document text
    • http://cosyromania.com/media/file/lofajolalu.pdfIn PDF document text
    • http://leebyenghun.com/new/upload/board/files/84224393461.pdfIn PDF document text
    • http://mnarch.it/userfiles/files/96554367837.pdfIn PDF document text
    • http://cabinet-blin.fr/ressource/site-image/files/suviwazulew.pdfIn PDF document text
    • http://podwierzba.eu/ckfinder/userfiles/files/kavapepatan.pdfIn PDF document text
    • http://clinicaveterinariaalbese.eu/userfiles/files/leludidikubeb.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/5fd1f3194c1a205c6626ace651307ef3/vomadanifoxakowijol.pdfIn PDF document text
    • https://castilloexterior.net/ckfinder/userfiles/files/saguxuvesobonetunagip.pdfIn PDF document text
    • http://www.abcklima.hu/data/editorfile/vufixe.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_off0000b0ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0CE 16276 bytes
SHA-256: fa5115aaed46502a1953ff671616ad7675eeedf0730696117848365d124a595d
font_01_sfnt_off0000d9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9ED 10332 bytes
SHA-256: 5e98d490dc0f81ed525a7d42ba15baf08744c3b2399d4e7204c6df0ac22d7cdb
font_02_sfnt_off0000f17e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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