Malicious PDF — malware analysis report

Static analysis result for SHA-256 177a6397b3fa6f65…

MALICIOUS

PDF

78.9 KB Created: 2021-09-09 03:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-23
MD5: 0acc70b55c38b047526dd9854edb0ddf SHA-1: e7109494e0e3a8bab5b5add5b94a078fe5b074fb SHA-256: 177a6397b3fa6f65e98e61ced4d489821f485e5cca69b20cbacfc50ddd1c123d
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 5

  • 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.
  • 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://bhiringisamsankalimandir.org/ckfinder/userfiles/files/lafuvunenapexisog.pdf In PDF document text
    • https://thuaphatlaihanoi.net/uploads/files/muverimez.pdfIn PDF document text
    • http://flamefitnessstudio.com/cewit/images/file/30050004099.pdfIn PDF document text
    • http://3t-t.com/User_File/UpFile/file/20210908061552_Nzg1NTIxMjY3NDU=.pdfIn PDF document text
    • http://leebyunghun.kr/new/upload/board/files/jarinoxujow.pdfIn PDF document text
    • https://aromamarketing.md/img/files/kipuwa.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612fdcb1d8289---vufomasapexewivejibarelel.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/sogekulipolopipomisixoxa.pdfIn PDF document text
    • http://stoka-saarlouis.de/userfiles/file/44355665035.pdfIn PDF document text
    • http://szmchem.com/userfiles/file/49452955415.pdfIn PDF document text
    • https://abrasco.org.br/ckfinder/userfiles/files/77250935153.pdfIn PDF document text
    • https://pushtypathshala.com/demo/aims/files/images/files/85653236278.pdfIn PDF document text
    • http://www.xn----9sbkvfu2aex3d.xn--p1ai/ckfinder/userfiles/files/bifopegexoxaporo.pdfIn PDF document text
    • http://shopgraeagle.com/ckeditor/uploads/files/karivujaja.pdfIn PDF document text
    • http://ever-pioneer.com/upload/files/8673316044.pdfIn PDF document text
    • http://doubler-son-capital.com/photos/files/vetejetajemolu.pdfIn PDF document text
    • http://gr-chem.com/upload/files/68380676485.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16132e6fba50dc---bopise.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/45685563648.pdfIn PDF document text
    • http://it-hair.com/userfiles/97489227840.pdfIn PDF document text
    • http://perksys.com/userfiles/file/95320782139.pdfIn PDF document text
    • http://cmorshomecareassociates.org/uploaded_files/userfiles/files/retoxikogopixepuwozewiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=pidgin+android+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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB817 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD028 17736 bytes
SHA-256: 0aee987aaa3aa2fe031ff1843a1cc001c8165ab81e14609b1ffe0c07b3f1971b
font_02_sfnt_off0000eb14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB14 17060 bytes
SHA-256: d0ae5d653b2e3615992f6483c6ebce9144b4e10ff655a9a68828961b261a1702
font_03_sfnt_off000116f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F5 10216 bytes
SHA-256: 037c4474071f63af79d90d0405e5c1318508aaad98a958ab5ce02dbdad688e96

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