Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f336b915b5d7ce…

MALICIOUS

PDF

96.0 KB Created: 2021-02-13 11:31:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 55d0c525b152bc282f3bc5c5ab898e1a SHA-1: 299c2559117af3da0bfc7d9236eecd767be10db8 SHA-256: 43f336b915b5d7cee4bd9f919eb11d090bf8949de1b42a123074fb04aad3f584
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a website disguised as a Bollywood movie download, which is a common phishing lure. Heuristics and ClamAV detection confirm the malicious nature of the PDF, classifying it as a phishing trojan. No scripts were extracted, but the primary attack vector appears to be directing users to a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=primewire.ag+bollywood+movies+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468553/normal_6020721a51545.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/Q4iieTb/poboy_express_pineville_la.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467573/normal_5fc7c391e7af8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454803/normal_601b58fccd408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402951/normal_5fea3e55acf62.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/ajghfbC/bollywood_songs_collection_zip_file_download_2017.pdfIn PDF document text
    • http://baugroup.info/fozesiwosik4stex.pdfIn PDF document text
    • https://cdn.sqhk.co/vofudejobif/9FT5Aek/77829202080.pdfIn PDF document text
    • http://ledabojuvogo.22web.org/nipoborejesumel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501361/normal_600154a2e226b.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/Uhb3jjV/qr_scanner_on_android_10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415770/normal_6006f2859c7b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445736/normal_5fd30abd0a979.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454824/normal_5ffca462e7654.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/mawesenasijoser/digudumuwekuw.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/95993776119.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/advisory_board_agreement.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/52636496117.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/new_android_apps_oct_2019.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000124bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124BB 6056 bytes
SHA-256: 3608dfac4dc441197a7a17ae2e6542a83357c938d772ec04459d2c70a444b1df
font_01_sfnt_off00013958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13958 10412 bytes
SHA-256: 0fb573da30c0022fb4f81504fbe667fb2176c6c5f65ca52300f19bb0e7bc2a1e
font_02_sfnt_off00015d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D38 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e

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