Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b417480f6cfff5…

MALICIOUS

PDF

123.7 KB Created: 2021-04-27 04:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0fb6abfdda60e4606cc766ccede454b5 SHA-1: 976766e91b1f3f90cf3b1241e6348d2910ddc5b3 SHA-256: f2b417480f6cfff59cf8e6e7a4007c94aa5a806de4c23ddbe0161591f2c2a248
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 0.9998

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://xajibur.ru/strik?utm_term=nfs+2+vs+3+vs+4 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369495/normal_605a38baaab1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469145/normal_604a35bf8605f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443325/normal_6069f1c465572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385852/normal_603a1d31f05a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471464/normal_6032e519d9d61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486190/normal_60534d38e2660.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386849/normal_60174714b3f71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404976/normal_60397929946ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448719/normal_60368398c42db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372377/normal_5ff7da98d2a5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383452/normal_605902070b445.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/0e2f785a-024c-4571-812e-99a8fb14bf17/android_programming_lab_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b6bec6e-a06e-45d5-9ffc-2c0349f499fc/thousand_splendid_suns_poem_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/549a2d64-f37d-4ee7-8d64-b31a692bee94/tv_ears_dual_digital_wireless_headset_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2034aa4-97e3-45f1-9d66-6ea90589d390/bunofu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0593b4be-0907-4bbd-9a1d-54c8c94ac9b6/81090715605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d99c7621-0370-4ec1-8038-84ba9a283fd4/wonesomipebixudax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a30ad7f6-1314-4bba-a69a-1a9177ac50ae/silence_becca_fitzpatrick_film.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7072d6f7-b0c5-4aa5-999e-a666a4f1a35a/is_autocad_available_for_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db9d084d-60eb-4753-b233-985b869fbd7d/f_distribution_table_0.05.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/192a936f-36c3-48ac-98c1-836679ca5c2a/nj_drivers_license_renewal_grace_period.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89ecd252-26fc-4d3d-8d8c-ce9037d6c2a9/why_did_britain_need_an_empire.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_off0001a71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A71D 4836 bytes
SHA-256: a0c91cdebdbee27b01864242db69db9eb6d986e9bf9431d702e3cdb578eaceea
font_01_sfnt_off0001b7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B7C6 11704 bytes
SHA-256: 2ce30ea38468ce5b57eb021e31283b83718ba016b7f9c61c156fc83e10b1d8ac

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