Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06e666855af0222…

MALICIOUS

PDF

118.4 KB Created: 2021-03-09 16:17:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: e9385d2da9247b759cad970dae5c8e59 SHA-1: 3772bd45ea2a473d2c14925d09f4f0af2375c89e SHA-256: b06e666855af0222df001d58e238ae6bd88bec02f4b54c98ca53a27635f6c054
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document exhibits characteristics of a phishing lure, impersonating a cloud document service to trick users into clicking embedded links. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of numerous external URIs, many hosted on disposable domains, suggests the document is designed to redirect users to malicious websites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://lozipotod.ru/wix?keyword=2016+iowa+high+school+football+playoffs PDF link annotation
    • http://xagakojitogiva.getenjoyment.net/hp_officejet_pro_8600_plus_user_manual.pdfIn PDF document text
    • http://koponegigat.medianewsonline.com/citizen_blue_angels_watch_instructions.pdfIn PDF document text
    • http://xemakaze.mywebcommunity.org/57194072431.pdfIn PDF document text
    • http://bimoriz.getenjoyment.net/can_you_have_uneven_houses_in_monopoly.pdfIn PDF document text
    • https://tirawinuzupufe.weebly.com/uploads/1/3/4/4/134445233/buvirorut-wunawigopuv.pdfIn PDF document text
    • http://jiteruruw.sportsontheweb.net/koputif.pdfIn PDF document text
    • http://puwexakibo.iblogger.org/23314858195.pdfIn PDF document text
    • http://liwexun.mywebcommunity.org/69375988900.pdfIn PDF document text
    • http://gomigapujasep.sportsontheweb.net/16340083495.pdfIn PDF document text
    • https://tejukikefuxod.weebly.com/uploads/1/3/4/7/134703803/8a84b0cb983b9d.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/oreilly_python_books.pdfIn PDF document text
    • https://betoxugibujimiv.weebly.com/uploads/1/3/1/0/131071043/1319632.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pidosowot.epizy.com/kefigoji.pdfIn PDF document text
    • http://zagopemolal.rf.gd/fojopomonumonefonena.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/audio-technica_at-lp60xusb_edifier_r1280db_turntable_package.pdfIn PDF document text
    • http://livirava.atwebpages.com/aircraft_structures_for_engineering_students_t._h._g._megson.pdfIn PDF document text
    • http://zelejiv.epizy.com/57328021562.pdfIn PDF document text
    • http://sefatefa.epizy.com/wosexijivil.pdfIn PDF document text
    • http://suborox.epizy.com/emotions_chart_for_adults.pdfIn PDF document text
    • http://kubomefewofumim.atwebpages.com/96349873153.pdfIn PDF document text
    • http://puwuvazesako.rf.gd/kambi_katha_malayalam_cartoon.pdfIn PDF document text
    • http://lesasesodimavun.epizy.com/14073929329.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D2A 5900 bytes
SHA-256: f8cbe825d2bf5d65ccd71484455260a98184c95079db434d89c0a1bcff5d6b39
font_01_sfnt_off0001a161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A161 13128 bytes
SHA-256: bb1c735484732d97e7ade54b18273cbadc8742539f4f840929a6bc8c07e094e7

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