Malicious PDF — malware analysis report

Static analysis result for SHA-256 e13ffde00a565305…

MALICIOUS

PDF

80.4 KB Created: 2021-09-10 12:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 8783fca8e4949bf99c57ac037a401b64 SHA-1: c8abddab7e69253fe90a69de7d2d1c898db441a0 SHA-256: e13ffde00a5653057c3343188865a89053506b99e1a9b98f0660cad4a5cfccf5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF contains embedded JavaScript and is flagged as malicious by ML classifiers and ClamAV. It also functions as a link farm on disposable hosting, directing users to download further malicious PDFs. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document likely attempts to phish for sensitive recovery information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • 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.
  • 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://pixomot.ru/uplcv?utm_term=photo+collage+editor+app+download PDF link annotation
    • http://emilymillerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/simiw.pdfIn PDF document text
    • http://aaas.handyfriendship.com/upload/files/ruvulawofa.pdfIn PDF document text
    • http://dominant.name/userfiles/file/96479453070.pdfIn PDF document text
    • http://phrabat.net/UserFiles/File/xuzonubom.pdfIn PDF document text
    • https://egyseg.eu/ckfinder/userfiles/files/70578115138.pdfIn PDF document text
    • https://ispartaprefabrik.com/ckfinder/upload/files/29547776175.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/kuwelab.pdfIn PDF document text
    • http://effekt-film.de/files/file/wabolaz.pdfIn PDF document text
    • http://gulfapex.com/uploads/file/jobotimafino.pdfIn PDF document text
    • http://akcompany.vn/uploads/userfiles/file/14714761523.pdfIn PDF document text
    • https://ans5680.preneed91.com/upload/files/peweka.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/37044972100.pdfIn PDF document text
    • http://speed-r.com/js/upload/files/wuledizagetomirubibeb.pdfIn PDF document text
    • http://aumnat2car.com/ckfinder/core/connector/php/upload/files/95073612936.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613511f7d89e1---46275925562.pdfIn PDF document text
    • https://imotrading.com/images/userfiles/jawegabanudaz.pdfIn PDF document text
    • http://uekekb.ru/!upload/files/91137304660.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613405ecde964---67899312407.pdfIn PDF document text
    • https://fallsplat.se/bildbank/file/56611594268.pdfIn PDF document text
    • http://brcassociati.com/userfiles/files/45183241896.pdfIn PDF document text
    • http://chnli.tw/CKEdit/upload/files/15262918930.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_off0000d677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD677 17476 bytes
SHA-256: 392b30aaae0161d24e21c91680069eef9760beec55ae84d5a020185f23589de1
font_01_sfnt_off000103e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E2 10712 bytes
SHA-256: ef0b93046e385400f7e7c678e73696f2818573f7574ccfdc1ecf44cd8bc4b28d
font_02_sfnt_off00011c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C49 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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