Malicious PDF — malware analysis report

Static analysis result for SHA-256 03dba88babfd8367…

MALICIOUS

PDF

68.6 KB Created: 2021-09-14 02:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 6ae3aa3f10348e496f0fec9ea0be4931 SHA-1: a10217fb41fe2fa6414a1fb827280b3d8dcb2bd1 SHA-256: 03dba88babfd8367f82398d040ad4f8fff20725502b226c4333bc906475a0724
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed to host numerous links on disposable domains, a common tactic for distributing malware or conducting phishing. While no scripts were explicitly extracted, the presence of numerous unknown URLs suggests the document's primary function is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://sicompk.com/survey/userfiles/files/32819349630.pdf In PDF document text
    • http://aotwresort.info/ckfinder/userfiles/files/kiwogebowoxuvikixoxu.pdfIn PDF document text
    • http://orenprom.com/img/account/file/xopewarun.pdfIn PDF document text
    • http://coverybox.box8websites.com/ckfinder/userfiles/files/xugemifugigek.pdfIn PDF document text
    • http://restokrat.info/userfiles/file/dunewimerajukaxafeket.pdfIn PDF document text
    • https://www.edmcenter.xyz/ckfinder/userfiles/files/bezatuvawewud.pdfIn PDF document text
    • http://abwwilson.com/uploads/files/midese.pdfIn PDF document text
    • https://biocoop.legreniervert.fr/ckfinder/userfiles/files/38237468116.pdfIn PDF document text
    • http://kxnjl.com/userfiles/files/42276358159.pdfIn PDF document text
    • https://maintogelonline.info/contents/files/23026319215.pdfIn PDF document text
    • https://limsurempat.com/contents/files/87024946510.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613f3bd9d036b---jakofejegap.pdfIn PDF document text
    • http://wiskind.com/filespath/files/20210905053656.pdfIn PDF document text
    • http://cozycornerexpress.com/uploads/files/46813543768.pdfIn PDF document text
    • http://basse-normandie.annuaire-regional.com/ckfinder/userfiles/files/fevejimalekitanokuwa.pdfIn PDF document text
    • https://eastoncn.housemember.com/uploads/files/zopufukuveve.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/tojusonaru.pdfIn PDF document text
    • http://vetusmeter.com/images/upload/File/76938925240.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161355e9fd8fee---59965830549.pdfIn PDF document text
    • http://jan-fotografie.nl/upload/files/97398817250.pdfIn PDF document text
    • http://solyaris.pro/admin/ckfinder/userfiles/files/79420068274.pdfIn PDF document text
    • http://gdfsztal.com/uploadfile/files/58800504096.pdfIn PDF document text
    • https://sgcaregiver.org/contents/files/46110257248.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=prince+of+persia+the+forgotten+sands+androidPDF 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_off0000af6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF6A 10852 bytes
SHA-256: a42ea291fc963bb12389501a47c6ac4bd0914af14a9a40cb5bd40819c7631c67
font_01_sfnt_off0000c82d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC82D 14640 bytes
SHA-256: 182f385db082901758c734df7fc463d90b522d7fc7cd95bae1aef7227eb98e89
font_02_sfnt_off0000ecbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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