Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2b66c461953f00…

MALICIOUS

PDF

78.2 KB Created: 2021-04-01 18:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09928240ab0c6e9507497787342c4093 SHA-1: 189ebcb05f0ad45c203085f5172bca0ee0f3477c SHA-256: ce2b66c461953f00eb59b69af2a51ed0312d0135b15c013696c08ba40998e962
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'nipisod.ru', which is likely a malicious domain used for phishing or to host further malicious content. The document body, though heavily obfuscated, suggests a lure related to 'Genting berhad annual report 2019'. No scripts were extracted, but the presence of embedded URIs and the overall detection profile strongly indicate a phishing or malware distribution attempt.

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://nipisod.ru/123?utm_term=genting+berhad+annual+report+2019
    • https://cdn.sqhk.co/zoravuzulop/mJsRnXv/google_sheet_countif_two_conditions.pdf
    • http://xapiduxirob.mywebcommunity.org/xotovesevirugezumu.pdf
    • http://fonujameritules.getenjoyment.net/virology_mcqs_book.pdf
    • https://cdn.sqhk.co/poxudanefisi/jmHgPKg/tous_les_analyses_medicales.pdf
    • https://vanufutalolu.weebly.com/uploads/1/3/1/1/131164160/af1d4001b.pdf
    • https://cdn.sqhk.co/guwuweri/jepicqw/likoridifabupevejifajim.pdf
    • https://puxasuzad.weebly.com/uploads/1/3/4/3/134352875/875014.pdf
    • https://cdn.sqhk.co/letarezetap/jjgcjiX/bluestacks_hd_app_player.pdf
    • https://kobenavu.weebly.com/uploads/1/3/4/7/134714827/3c4c21bc40.pdf
    • https://gitapelo.weebly.com/uploads/1/3/2/6/132682700/d808711b.pdf
    • http://mepamoso.sportsontheweb.net/altar_call_roy_gane.pdf
    • https://raxagipob.weebly.com/uploads/1/3/4/8/134883443/3469905a5.pdf
    • https://cdn.sqhk.co/joxutedunik/gjcWhjS/42900796208.pdf
    • https://nekegofoka.weebly.com/uploads/1/3/4/3/134364724/zifubudagi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://merovuditipin.onlinewebshop.net/rovalogenamowixini.pdf
    • https://s3.amazonaws.com/rodiligarexo/logeromewelolega.pdf
    • https://s3.amazonaws.com/viregujipowuru/world_of_warcraft_chronicle_volume.pdf
    • http://nitubak.atwebpages.com/complete_pet_for_schools.pdf
    • https://uploads.strikinglycdn.com/files/244f1ad6-2c34-4909-811a-953fa0664346/75841284356.pdf
    • https://uploads.strikinglycdn.com/files/42e7e0ab-1238-4999-a895-4b0c13119bd0/37041394183.pdf
    • https://uploads.strikinglycdn.com/files/192d5a19-c53e-484e-a97d-4a669ff56c76/gubejerozugedavuzak.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f14b.bin
e38dcc8f9196012ad4e54ed41b5e11e619a83bca53da74d07032a5b41f69432e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF14B 5696 bytes
font_01_sfnt_off000104a8.bin
3ff4638af511e1c7cbe3405eb11b9c724887127f8b71d9a0de11d49bb755d05c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104A8 11416 bytes

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