Malicious PDF — malware analysis report

Static analysis result for SHA-256 82398e777671ad39…

MALICIOUS

PDF

65.2 KB Created: 2021-01-24 11:37:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: fdd0172feecbce8be07255bb7d13aa4e SHA-1: 915e6172927ed2d7a8938bee9a7c12f92212865d SHA-256: 82398e777671ad39d49ce69162a6c59354540e6a2056d85d4e6d9058ccccbc5d
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The embedded URL and document body suggest a lure related to an Android PSP emulator, which is a common tactic for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URI indicate an attempt to redirect the user to a malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/aws?utm_term=awe+psp+emulator+for+android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4422371/normal_5ffc1b9d9dcbc.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/gfC9Ohc/zunetegubobolurulal.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/eidIFbq/death_worm_game_2.pdfIn PDF document text
    • http://natur-green.fun/xanidigowwwc9t.pdfIn PDF document text
    • http://kamaz-ftc.com/organizer_day_by_day_2020tvyp1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427544/normal_5fe9928c4e9ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379385/normal_5fde9fbb8a595.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/lupatozepusabosibuke.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/abbaigaru_movie_naa_songs.pdfIn PDF document text
    • http://rapuzivawa.epizy.com/vupajusananu.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/zopaxalosida.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/rigelamirovof.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/kawituzujixilixevinure.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_off0000bfd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFD0 5268 bytes
SHA-256: bbef9082713be88e33369a2aeb0852688ff22e6103bf8eb4bf1561292268aaee
font_01_sfnt_off0000d1b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B4 10772 bytes
SHA-256: ddbbc005bbb486b8b60ffef182a4ed51540f1fcb2d8972d5066a5057676759f8