Malicious PDF — malware analysis report

Static analysis result for SHA-256 46ca7910606e90a8…

MALICIOUS

PDF

100.1 KB Created: 2021-09-15 11:35:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: d37e2e1285885bab2dc2a6301e827146 SHA-1: 0be62a307ce2eeb0189572413fb74b8ea834e864 SHA-256: 46ca7910606e90a8a5d716a26e5a08ef67b6b44144f8c0d60b82cef4b8a3ab3b
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs and is flagged by ClamAV as a phishing trojan. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document's intent is to solicit sensitive recovery secrets or private keys from the user. The presence of numerous distinct hosts and links suggests a link farm designed to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://willettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/61928950847.pdf In PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/3affc58a301ecd37bf00832cfc556005/fopakelimasejozasop.pdfIn PDF document text
    • https://abcoegypt.com/userfiles/files/wamiginipubibajonali.pdfIn PDF document text
    • http://sensor4you.com/fckeditor/editor/filemanager/connectors/php/fckeditor/upload/202109/file/bidasagopek.pdfIn PDF document text
    • http://teleinwestor.pl/userfiles/file/58180288850.pdfIn PDF document text
    • https://idd.no/ckfinder/userfiles/files/sijanikataxakire.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/29235555691.pdfIn PDF document text
    • https://jordan.si/dokumenti/file/mudotumojumipukabufiz.pdfIn PDF document text
    • http://ambulatorioveterinarioilprato.eu/userfiles/files/fufeleposopi.pdfIn PDF document text
    • https://oxi-dental.ro/imagini_ws/26988994697.pdfIn PDF document text
    • https://cosanuesa.com/componentes/editor/ckfinder/userfiles/files/93253976312.pdfIn PDF document text
    • http://tinavaron.com/ckfinder/userfiles/files/vetugeli.pdfIn PDF document text
    • https://propertiproperty.com/Uploads/userfiles/files/juberiwovarebide.pdfIn PDF document text
    • http://hart-metale.pl/gimnazjum/userfiles/file/pezusutevugubetudodew.pdfIn PDF document text
    • http://drprdesaihospital.com/uploads/rofikujedorixuka.pdfIn PDF document text
    • http://varadimasszazs.hu/uploads/files/20329075491.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614127d92a7ae---darulajonexes.pdfIn PDF document text
    • http://jinyezi.cn/upload/16625584843.pdfIn PDF document text
    • https://lostfoundglobal.com/userfiles/file/56833781191.pdfIn PDF document text
    • http://socukorglutamatmentesfuszer.hu/ckfinder/userfiles/files/jofemawanebi.pdfIn PDF document text
    • http://climacom.eu/userfiles/files/rilurakerug.pdfIn PDF document text
    • http://enjoy.sk/editor_uploads/system/files/10219534613.pdfIn PDF document text
    • https://contact-house.com/fckeditor/upload/file/34115537731.pdfIn PDF document text
    • https://ans5680.preneed91.com/upload/files/61696633069.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+install+parrot+os+on+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_off00011b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B0E 21752 bytes
SHA-256: eab83c119483ae39c267eb8ea556e6e358457c948ebd5cfc4963e3df9adbad91
font_01_sfnt_off00015330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15330 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B47 10332 bytes
SHA-256: a7d61b03a366f440f0756fa4bf2483e2aec808fb80fdd012f7c7c40f99884550