Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38608407ddbe17a…

MALICIOUS

PDF

73.2 KB Created: 2021-02-23 22:08:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: f7fc1f7c7ff8a03d346a9421b2f2e6c5 SHA-1: c8dbff92387bdce86dd7fc8edee35f37881f2e42 SHA-256: e38608407ddbe17a6f0be66cd3e2f8694389c994a0ff2235de9184c4dc42664a
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1190 Exploit Public-Facing Application

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. The 'SE_MFA_LURE' heuristic strongly suggests the document is designed for credential harvesting, specifically targeting multi-factor authentication or one-time codes. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure point towards a phishing attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/wb?keyword=how%20can%20i%20learn%20english%20grammar%20tenses PDF link annotation
    • https://rokopopowatapo.weebly.com/uploads/1/3/0/9/130969888/vigofedebo.pdfIn PDF document text
    • https://tovexalo.weebly.com/uploads/1/3/5/3/135348509/3d0bbf9f.pdfIn PDF document text
    • https://cdn.sqhk.co/tetolonul/cijhejc/24496287113.pdfIn PDF document text
    • https://koloxajemixe.weebly.com/uploads/1/3/1/4/131482821/52ceb.pdfIn PDF document text
    • https://dexazime.weebly.com/uploads/1/3/1/4/131437554/dea7939100e11ef.pdfIn PDF document text
    • http://dnepr24.info/815263600386uix.pdfIn PDF document text
    • http://yourdesk.website/jawegigujolekesadojufuurdd.pdfIn PDF document text
    • http://smotrikino.fun/derivative_rules_sheetb13jp.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/49519111479147vg.pdfIn PDF document text
    • http://love-cosmetics.shop/aviation_logbook_excel_templatessv0pj.pdfIn PDF document text
    • http://scriptbook.xyz/dilexafijasawotunidetpn8kf.pdfIn PDF document text
    • https://dasewukux.weebly.com/uploads/1/3/5/9/135956745/koraxojizej.pdfIn PDF document text
    • http://trysol.xyz/mesunipumuwavolotjo80k.pdfIn PDF document text
    • http://digtalcaliper09.xyz/best_80s_dance_music_videost9ckv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://likifodafiduno.epizy.com/google_account_can_t_sign_in_android.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/bijosizubunaxudewatu.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/guided_meditation_sleep_relaxation_10_minutes.pdfIn PDF document text
    • http://zifefujig.epizy.com/the_importance_of_being_earnest_sparknotes_quiz.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/braun_series_7_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/zisebiniwigowewokixupurer.pdfIn PDF document text
    • http://vuvobulasuxes.epizy.com/tomagimudemaxeworunoda.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_off0000e0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E9 5264 bytes
SHA-256: 067d318dc34f19143870616aec2d84430e04166e2c8f1eccec56892f6f030413
font_01_sfnt_off0000f2b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B9 10624 bytes
SHA-256: 870acd8d68c5146fdab0626f33f8f5136d54120e1d0ac2c923c462af660dbfe1

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