Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1e25564f183b6a…

MALICIOUS

PDF

78.5 KB Created: 2021-03-12 01:51:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: a38644b16aee7eab312fe51540d49198 SHA-1: 5e83335a1e3dc09609148e20a83f9597dd87e779 SHA-256: 9d1e25564f183b6a965019b66caba1063cc4bf7af928169ce68031dda316c570
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'https://maypoin.ru/wix?keyword=sidekick+country+couples+dance', which is likely a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

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://maypoin.ru/wix?keyword=sidekick+country+couples+dance PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404514/normal_5fd376e1daf53.pdfIn PDF document text
    • https://cdn.sqhk.co/vigeroti/ijjjgcs/erase_recent_files_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/sutazojawote/jdpighe/zowobe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469349/normal_60054157e5006.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/RtWVnif/tenokazab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412757/normal_5fe53113ef1f7.pdfIn PDF document text
    • https://cdn.sqhk.co/bivotiboma/fXhhljg/kodiak_truck_for_sale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c356e90-8e70-4fd8-a653-cd280347b7cd/home_zone_security_triple_head_led_motion_sensor_security_light.pdfIn PDF document text
    • http://zilapiwet.epizy.com/kobomoxegodolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0558ad2b-783f-4dfd-8405-5893bd4c4d99/what_does_parcel_collected_from_sender_mean_dpd.pdfIn PDF document text
    • http://mexowotevofo.rf.gd/4934617260.pdfIn PDF document text
    • http://vezoxonu.epizy.com/75068172703.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/west_bend_bread_maker_41085_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/rojipa.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/ejemplos_de_alcanos_alquenos_y_alquinos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d739c2f-92dd-49d1-b0e1-1680e91ce802/bakizojolexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89ac4b59-3642-4973-ba85-e993eeeb3791/how_to_calculate_op_amp_power_dissipation.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/mafutezav.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/socratic_questioning_in_the_classroom.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/48114424944.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_off0000f5bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BF 5336 bytes
SHA-256: dc66c5bfe3ce3abb25f77e19e918e695aff0f8835c48eef2adb0465a266da537
font_01_sfnt_off00010802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10802 10700 bytes
SHA-256: 402f6c0e980ce33e0f025851908ce782fdf3a19d497c272843272a34d99e9447

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