Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbf6c993fa045b4c…

MALICIOUS

PDF

79.2 KB Created: 2021-02-20 13:23:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 7ae66334239c5e0c38fedca995a18857 SHA-1: 90fd8b953cf5c5d7d99dbc31b5e0aa4401c470af SHA-256: fbf6c993fa045b4cb459ff239dcc6ab7655dc06d68099bb2e2d211e17f51e52a
104 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, specifically flagged as a phishing trojan. It contains an embedded URL that points to a suspicious domain, likely intended to deliver a secondary payload. The presence of a 'download' button heuristic further supports the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/strik?utm_term=224+valkyrie+reloading+data PDF link annotation
    • http://jopkapopka.online/lerogegimepifixulizozh08j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454824/normal_5fe114d580a96.pdfIn PDF document text
    • http://medicinfo.online/procol_harum_homburg_piano_sheet_musicjk6rh.pdfIn PDF document text
    • http://just-gopro.com/jarezanotovilibatuy20jn.pdfIn PDF document text
    • http://ideal-it.fun/54575386091ii1h0.pdfIn PDF document text
    • http://edevletorg.com/7924705350698tbv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477615/normal_60212eb58324d.pdfIn PDF document text
    • http://vovpomnim.ru/dihybrid_genetics_practice_problemszee0v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412900/normal_5fe33619d52e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368996/normal_600e8637cfb91.pdfIn PDF document text
    • http://wowitaly.space/how_to_use_the_esv_study_biblefmmvv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374963/normal_5fc98ace882e6.pdfIn PDF document text
    • http://damvglaz2.xyz/g_shock_watches_for_salest95u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://todoxejanifala.rf.gd/nelexag.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/christina_aguilera_burlesque_performance.pdfIn PDF document text
    • http://daxizupalapa.rf.gd/kufulebilitavig.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/brand_awareness_survey_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/factoring_worksheet_algebra.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/95328456286.pdfIn PDF document text
    • http://ziwejozaz.epizy.com/69791168840.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/dillon_mt_weather_report.pdfIn PDF document text
    • http://vedaremix.epizy.com/bumibejowibixijudutabowiw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE780 4952 bytes
SHA-256: ba0c46fef7d51d332de237d3f1dd2e72919465c2f926d07579a636b34bb6071a
font_01_sfnt_off0000f86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86D 12712 bytes
SHA-256: 1e03b2943d7a03d7989141fe46423c164a1a9f9d51ba410d77511616f101b51c
font_02_sfnt_off0001219a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1219A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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