Malicious PDF — malware analysis report

Static analysis result for SHA-256 fffe331ca40caf6b…

MALICIOUS

PDF

73.4 KB Created: 2021-04-26 11:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 977678e42726848655f64c92b485691f SHA-1: 36c99bcc8b78b868487fdb0d2962c0c0b758bf96 SHA-256: fffe331ca40caf6b25466c9ed14c9e43a19e58f01fab971d88ea42e0e2837620
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://vilenefex.ru/strik?utm_term=nora+roberts+book+list+the+macgregors PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445125/normal_606a909bb2d85.pdfIn PDF document text
    • http://lonemap.medianewsonline.com/boiler_notes_nptel.pdfIn PDF document text
    • http://stroiline74.ru/digitech_rp50_manual_espaolionhk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460070/normal_5fdb284cb8ffd.pdfIn PDF document text
    • http://rrrrkkkkk.space/68335902352vn5vw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480387/normal_6036c44a32e69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450884/normal_5febeb21da54e.pdfIn PDF document text
    • http://kafidovomiguvo.mywebcommunity.org/misexibupu.pdfIn PDF document text
    • http://parralax.net/what_does_the_sun_symbol_meanqb2nn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464525/normal_5febfffc15918.pdfIn PDF document text
    • http://dektesheff.xyz/11251694066gm2h2.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/lomuper/famous_nicholas_sparks_books.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/60419899137.pdfIn PDF document text
    • http://wovefekekixuji.rf.gd/powerpoint_templates_computer_science.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/44852617157.pdfIn PDF document text
    • http://gavexebalaji.rf.gd/2020_kia_sedona_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/washington_post_gamestop_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/92118909450.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/lusatedasejilutowe.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/pisipine.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/how_to_clean_a_maytag_quiet_series_300_dishwasher.pdfIn PDF document text
    • http://pedulakumi.rf.gd/watch_a_discovery_of_witches_online_canada.pdfIn PDF document text
    • http://xekepavuvema.epizy.com/super_mario_bros_wii_u_world_2_castle.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_off0000e1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CB 5388 bytes
SHA-256: 65a6aec563f910d92ef16d933da10832653c2f6d2662eae9c35f7de44cd59fdf
font_01_sfnt_off0000f3f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F6 10508 bytes
SHA-256: 3cec0bf9c7aa8868224f1d92eb87fefabcfc8007a044df4ab44bc5abdba88bbf

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