Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e228a87db7e428a…

MALICIOUS

PDF

94.5 KB Created: 2021-03-01 05:53:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e0e50175bc352c7af21f3d13491684c SHA-1: bb2caffe5d9aa3cb6df1250ca9cd37b8cdf5157c SHA-256: 8e228a87db7e428a7ccaa59ded573bd2fafeb96d136f23f837018399e2aae597
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a phishing site disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the presence of an external URI and the overall classification suggest the document's primary purpose is to redirect users to a malicious domain for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=how+to+get+sofa+animal+crossing
    • https://cdn-cms.f-static.net/uploads/4471275/normal_6037bc88388c4.pdf
    • https://cdn.sqhk.co/tojofelekob/ia6KibJ/60452440769.pdf
    • https://static.s123-cdn-static.com/uploads/4474978/normal_5fe4eede6cca3.pdf
    • https://karesaxu.weebly.com/uploads/1/3/5/3/135392924/suxog.pdf
    • https://xujuwoxevosu.weebly.com/uploads/1/3/4/8/134896670/vibadazerunefa_wozalebuzoruwat_jenixoxukajok.pdf
    • https://cdn.sqhk.co/fogibadeku/eFtRzAi/class_9_science_motion_notes_download.pdf
    • https://cdn-cms.f-static.net/uploads/4478134/normal_6031186567f19.pdf
    • https://cdn.sqhk.co/bawusipa/jgkLij7/spin_the_bottle_app_for_android_phone.pdf
    • http://sakulog.sportsontheweb.net/what_did_the_government_do_to_help_the_great_depression.pdf
    • https://static.s123-cdn-static.com/uploads/4379854/normal_5ff86700279f8.pdf
    • http://gakukuketisalum.scienceontheweb.net/84598929575.pdf
    • https://vosovijuz.weebly.com/uploads/1/3/0/8/130813614/xibim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tuwafexom.epizy.com/attu_tamil_dubbed_movie.pdf
    • http://vujuvisesakok.myartsonline.com/83431293835.pdf
    • http://wudobez.rf.gd/96261993508.pdf
    • http://kojexeruxub.epizy.com/kasulikubowidiselawugovuf.pdf
    • http://devugagevubuz.rf.gd/utmost_wealth_bond_withdrawal_form.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000123cf.bin
b3260a8b27c40a1c9408c40b3dcfb9ec9ded560232013cbc1ca8de37ebb5a831
pdf-font-stream PDF embedded font (sfnt) at offset 0x123CF 6588 bytes
font_01_sfnt_off00013449.bin
acff697e0a7e037ec17e8a4bc09de5c25a8385afd9ffc160dd96cacbc872d789
pdf-font-stream PDF embedded font (sfnt) at offset 0x13449 5252 bytes
font_02_sfnt_off0001462c.bin
08d46a923ebd972880088d4eb05f44207f8168e93067a8c1c6f0891c6dc8240c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1462C 11308 bytes