Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f2b0767a397965a…

MALICIOUS

PDF

71.9 KB Created: 2021-03-22 00:50:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85838b1f2a72d90707d0d860beda43f1 SHA-1: 70a33deee3c10fa094df33d94fec9e5ac59b998c SHA-256: 4f2b0767a397965a93a6aed2d9bdefbaed2e49b1c18b80282e86cd8f68eb4dfa
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain that appears to be part of a phishing or scam operation, disguised as a search result for technical information. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dafemum.ru/wix?keyword=honda+foreman+500+manual+shifting+problems
    • https://cdn-cms.f-static.net/uploads/4484635/normal_6016d49bcd49e.pdf
    • http://mosebuzixat.mywebcommunity.org/navy_advancement_center_cpo_results.pdf
    • http://gimatadokij.mygamesonline.org/grammar_practice_book_grade_4_harcourt.pdf
    • http://zabafijazone.iblogger.org/97633434822.pdf
    • http://govazibibili.22web.org/52517740425.pdf
    • https://cdn-cms.f-static.net/uploads/4387033/normal_6032852aa54a7.pdf
    • https://cdn-cms.f-static.net/uploads/4480414/normal_604b1b24b792a.pdf
    • https://static.s123-cdn-static.com/uploads/4426953/normal_6005b6a019dc2.pdf
    • http://pemowovamig.iblogger.org/summary_filter_in_cognos_report_studio.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://webamega.epizy.com/bang_board_game_rules.pdf
    • http://botemexake.rf.gd/how_to_clear_cmos_button.pdf
    • https://s3.amazonaws.com/rogugagatuf/44780421579.pdf
    • https://329f26c8-0235-4118-8622-173d264d9cf1.filesusr.com/ugd/221f3a_2e73d0a253fa4e92acce2a9e7f9025d7.pdf?index=true
    • http://milisepidug.rf.gd/fluvial_depositional_processes_and_landforms.pdf
    • http://baguzakanaso.epizy.com/assamese_whatsapp_status_new_video.pdf
    • https://8b8c7005-3af0-45a1-8e5b-a6902caa9335.filesusr.com/ugd/dbd7d9_4795468f25e24b0b9581517cbdada1f7.pdf?index=true
    • https://s3.amazonaws.com/dazifozixawus/international_finance_news_2021.pdf
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_d1bd10ea9cca45b793beaecd5091c123.pdf?index=true
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdca.bin
1f5f9cfd3454e77775303f1f1acb747b61a83e3f132ae82535aa369142dfd994
pdf-font-stream PDF embedded font (sfnt) at offset 0xCDCA 5704 bytes
font_01_sfnt_off0000e0f7.bin
454e9669db5779b561c00714e2fc98ca6662a8d630c793961a5ba4f707d641cc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F7 10336 bytes
font_02_sfnt_off00010456.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x10456 4324 bytes