Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3611319e5fdc196…

MALICIOUS

PDF

68.9 KB Created: 2020-11-10 04:56:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c96d634bc8424b3e22a6a1adae767728 SHA-1: 7ae95b74e7dae85f06d6d354624772ece60ed10e SHA-256: b3611319e5fdc196b0005a10a6690694d154900dac986401efbfb7148db120ef
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains an embedded URL pointing to 'traffset.ru' which is presented as a 'madden mobile coin generator'. This suggests a phishing or scamming attempt to trick users into visiting the malicious URL. No scripts were extracted, but the PDF structure itself contained the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/123?keyword=madden+mobile+coin+generator+no+verification PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454968/normal_5fa72943221ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_5f8a21f6991fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gifiz/99389655394.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/josubuzolupixevesug.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/vodagamoragikovam.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/soaring4traffic_manual_traffic_exchange.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/multiplying_binomials_and_trinomials_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/borrowing_money_from_a_friend_contract.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68cd7d81-446a-4375-897f-ac1e4d73e816/47460845237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dbd73a5-a355-417a-9f37-dcd0ba30e048/bemixogogatitefugazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/808ea400-ddcb-4d3c-a2f0-84bf0dd05214/nakipezonaxajebufuratuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/stalking_jack_the_ripper.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/grammar_games_mario_rinvolucri_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/sogovulivotobebateti.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/how_to_install_manual_turbo_boost_controller.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/understanding_business_free_full_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/parimejulupaso.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_off0000cfb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB5 5368 bytes
SHA-256: 276099867d9cf8e837d96ccb74b366781653d1fa5f130f7c12b302a4f10cec88
font_01_sfnt_off0000e1f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F8 10732 bytes
SHA-256: 2f2709c934897849dc374b5e809f9f9572e432806a03d8982deeeaea599ac5cb

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