Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e013953ed2de706…

MALICIOUS

PDF

80.2 KB Created: 2021-09-15 20:13:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: baf5550bbb92386325ecb84d55696b40 SHA-1: c3675d899d72e3c4206ab229b3221cfe237d6a13 SHA-256: 7e013953ed2de706019e6d7d1c55ccf1d8580b8155e5349d4aac49b9c2dc6ff4
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on suspicious domains and appear to form a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for executing malicious code or redirecting users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://keiba-like.biz/js/ckfinder/userfiles/files/2295761794.pdf In PDF document text
    • http://mastrodibaglio.it/userfiles/files/10216502015.pdfIn PDF document text
    • http://guanzhuli.com/userfiles/file/kulufawedevivawuxonir.pdfIn PDF document text
    • http://saopauloairporttransfers.com/ckfinder/userfiles/files/48198014872.pdfIn PDF document text
    • http://swhwsolution.it/ckeditor-ckfinder-integration/uploads/files/19874557202.pdfIn PDF document text
    • http://barsugo.com/ckfinder/userfiles/files/soxebadizabisivukez.pdfIn PDF document text
    • https://egyediajandekotletek.hu/mvc/userfiles/file/gimeperaxula.pdfIn PDF document text
    • http://gabortech.com/admin/file/40162867152.pdfIn PDF document text
    • http://harlit.com/upfiles/file/zafixegakixa.pdfIn PDF document text
    • https://rizecanreklam.com/images/file/44966828362.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/7d931cceed48013615317d4ac0e73fe2/4565903478.pdfIn PDF document text
    • https://nirkongrp.com/ckfinder/userfiles/files/43419828560.pdfIn PDF document text
    • http://sportsclinicwest.ie/media/contents/file/47714152195.pdfIn PDF document text
    • http://kingkady.com/uploadfile/files/niwid.pdfIn PDF document text
    • https://majubesar.org/contents/files/21882605793.pdfIn PDF document text
    • http://infoegrafica.com/userfiles/files/kerapevemubofis.pdfIn PDF document text
    • https://landatur.com/files/galeria/files/44188691652.pdfIn PDF document text
    • https://firsatpin.com/calisma2/files/uploads/57358712712.pdfIn PDF document text
    • http://studiotecnicomancini.eu/userfiles/files/bamivemujaze.pdfIn PDF document text
    • https://healthlantern.com/ckeditor/ckfinder/userfiles/files/famoropimodafamopatizu.pdfIn PDF document text
    • http://purplebyanki-com.bvirani.com/ckfinder/userfiles/files/90308742482.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613862005cdad---pijaponu.pdfIn PDF document text
    • http://dongshengcable.com/images/upload/File/63721619926.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=sd+card+password+remover+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_off0000d39a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39A 10652 bytes
SHA-256: 0353972fd1b6ca330a8d4166f1e30ec61949a73b083f4068eaf43fd2fc3a49b7
font_01_sfnt_off0000ec0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10421 18236 bytes
SHA-256: 9388e436c08a44e1e930a9ad5a3275cdeb8d4554fc4f881c6444129ad5d12c54

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