Malicious PDF — malware analysis report

Static analysis result for SHA-256 57d6642fd51fe92b…

MALICIOUS

PDF

80.7 KB Created: 2021-03-29 16:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 926a8a3c7d702886b584a19a32ab54c7 SHA-1: dbbd0ab49a54fed566800368bffa0cdb8a6cd354 SHA-256: 57d6642fd51fe92b142be36ebb3a6a1849c2eaa2eb71549bf279c2b5e677bb29
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, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware delivery. The document body, though heavily obfuscated, suggests a lure related to live streams, further supporting a phishing or malicious content distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=steelers+vs+ravens+live+stream+youtube
    • http://helen-art.ru/how_to_use_a_hobart_140_mig_welderso9cs.pdf
    • http://fito4ka.xyz/lejoka47as8.pdf
    • http://voirly.xyz/75794239354g3x2y.pdf
    • http://vapabamulu.22web.org/how_to_use_micrometer_and_vernier_caliper.pdf
    • http://triple-doska6.club/6633021515z6d1k.pdf
    • http://waludojugemupa.iblogger.org/applied_operation_research_book.pdf
    • http://checkyourcredit.info/neurological_assessment_form_physiotherapybrpa9.pdf
    • http://file-id.ru/talep7cfo5.pdf
    • http://cmbespaceclient.xyz/148958821417up19.pdf
    • http://liketime.online/95020753076pzja1.pdf
    • http://tokio-2020.fun/xebamolefofezovotugavegdqy3.pdf
    • http://realwockyc.info/83050182846q4ujy.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jozetej/mukafewudulakefa.pdf
    • https://uploads.strikinglycdn.com/files/69426f16-fcf0-452b-938d-a5a2b01a4ff8/casio_standard_aw-80v-5bv.pdf
    • http://wamijak.epizy.com/mowupipigokixikip.pdf
    • https://uploads.strikinglycdn.com/files/60d5e3eb-d2fc-42ba-9dff-5c8e1f6aada3/mcculloch_eager_beaver_chainsaw_price.pdf
    • https://3b044092-e341-4c69-a8e2-52b14fc1865f.filesusr.com/ugd/370021_961b2af018db4b20b113cfdb98fd20fe.pdf?index=true
    • https://s3.amazonaws.com/nokiva/37980263483.pdf
    • http://gamebunamol.rf.gd/getting_there_a_book_of_mentors_free_download.pdf
    • https://uploads.strikinglycdn.com/files/99ce7d3b-958f-4ff4-a1e8-549e6be37826/27838443698.pdf
    • https://uploads.strikinglycdn.com/files/64a768f7-f1f7-4515-9259-d117d2afbf79/a_lesson_before_dying_chapter_1.pdf
    • https://uploads.strikinglycdn.com/files/ff9c740d-1098-40e4-8b42-751676e11675/nolefeluzeb.pdf
    • https://7f1888b6-cdab-4603-9914-1cf81a8b29aa.filesusr.com/ugd/6846fe_1f787aff9dd34e3e84e1f5e11ed1dc13.pdf?index=true
    • https://s3.amazonaws.com/dubiditiginowo/patasijikafekefufedixilak.pdf
    • https://s3.amazonaws.com/xamibudasagas/14375587274.pdf
    • http://tujiritam.epizy.com/9958952801.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_off0000fcf2.bin
22fbeec0167d44303561c1cf2801b486cc59b43fb7542fc5f5a88313b3f7291e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF2 5236 bytes
font_01_sfnt_off00010eb1.bin
7c0a4f85d1d703520788ea1fb91484e70f451622003c0579de61ca20e947085b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EB1 11164 bytes

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