Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a2f802fa550195…

MALICIOUS

PDF

74.8 KB Created: 2021-02-11 09:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: a45515fc96825dfc6ebd328dbce84191 SHA-1: 273494b4c3242062d44646e938148f88973b4439 SHA-256: d8a2f802fa550195571fab0a0a9e29325d8628f91e011caf0984675cd561dc23
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs users to a suspicious URL disguised as geometry exercises. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site.

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://leonvi.ru/aws?utm_term=geometry+proving+exercises+with+answers PDF link annotation
    • https://cdn.sqhk.co/gunakawujo/hdBjijh/classic_race_bikes_for_sale_uk.pdfIn PDF document text
    • http://winclean-sale.shop/44061493020vfxaw.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/bjeChhg/88948734072.pdfIn PDF document text
    • http://zuragaretezi.iblogger.org/sap_fiori_certification_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/linewebozid/lElhajc/kingdom_hearts_3_yozora_kupo_coin.pdfIn PDF document text
    • http://edapog.online/mimatopy7ejm.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/hiziaib/ios_camera_for_obs_studio_review.pdfIn PDF document text
    • http://vaworudewu.iblogger.org/sotodadune.pdfIn PDF document text
    • https://cdn.sqhk.co/lexebogefaj/Iichdge/empires_and_allies_update.pdfIn PDF document text
    • https://cdn.sqhk.co/fewibefanid/8hflkic/.pdfIn PDF document text
    • https://cdn.sqhk.co/pisapaxosabo/hgHO4ih/plus_point_technical_services.pdfIn PDF document text
    • https://cdn.sqhk.co/wavefekus/fIifjcZ/9124438524.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/vidadaviwal/rizivitop.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/cadillacs_e_dinossauros.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/xenab.pdfIn PDF document text
    • http://desibevazivoxan.rf.gd/21960090260.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_off0000d1ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1EC 5668 bytes
SHA-256: 40cff0df8ac0123016ac6bd86ec6391a8c7bf0142e8b3903441994e4f2532fa8
font_01_sfnt_off0000e53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53C 10328 bytes
SHA-256: 73d5f7487a33d5da717b11f559b466497de66669d38b014cb54f495091e0238e
font_02_sfnt_off0001089d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1089D 16208 bytes
SHA-256: 6c0b0f56775aa1e9282092c5f2e789b1388090d701bae0c95087b1e0034ad40a

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