Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec08431e6eb61525…

MALICIOUS

PDF

197.1 KB Created: 2021-03-22 13:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: df48189e0a47941042c78b0e4b5b29f6 SHA-1: 535f4d7d7e12b5d54422cae97964acddb18a64d6 SHA-256: ec08431e6eb61525d561acfae2aa7aa1a44606e3e937f3fbaa56862642ba44cc
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 0.9819

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://xezojetit.ru/strik?utm_term=tokyo+ghoul+season+3+quinx+squad+names PDF link annotation
    • https://cdn.sqhk.co/votiwixuduzo/hc1tio0/electrical_code_conduit_fill_capacity.pdfIn PDF document text
    • https://cdn.sqhk.co/desiruzag/yJjfBT5/32062987292.pdfIn PDF document text
    • http://igme.site/40961279546vzjnw.pdfIn PDF document text
    • http://m-ryanaf.site/jofotes7uu9p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427523/normal_603f2fde073df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427780/normal_5fdf66c86c48e.pdfIn PDF document text
    • http://kayikciakademi.com/equaC3A7C3B5es_literais_exercicios_8o_ano_doc8wnhr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406806/normal_604138f06df29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495241/normal_5ffc60a99e814.pdfIn PDF document text
    • https://cdn.sqhk.co/limexofure/gd5jajb/transformers_robots_in_disguise_combiner_force_episode_6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494149/normal_60268548d3187.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476437/normal_5ff2d346a82fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450514/normal_5fd068c1b5312.pdfIn PDF document text
    • https://cdn.sqhk.co/jozunufap/g8UTvk1/atrial_fibrillation_guidelines_2018_ppt.pdfIn PDF document text
    • https://cdn.sqhk.co/rokogikapo/icdnBjh/mindspring_memories_gateway_2000.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://fa5d8e44-005d-4c05-925d-ba60cb7f5023.filesusr.com/ugd/121e37_6b5584a7e887420fb4e2b652c521d895.pdf?index=trueIn PDF document text
    • https://89d37d93-eaf9-4fc7-8d5e-07438b8f18e7.filesusr.com/ugd/e80f4c_22521f6ad0a04dfca576af5cd999014f.pdf?index=trueIn PDF document text
    • https://8ac5c8e1-9174-427d-95c2-90bebb9f105a.filesusr.com/ugd/44b221_5b90a34d38d54cdcb87f5ba3748d2797.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/883aee37-d4fa-4a31-b80d-d6a946ccd8a8/bissell_carpet_cleaner_spare_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fda1dca-ef44-443b-9ba6-a7a1768d30bc/swann_wireless_security_camera_system_setup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/214ef7e2-2c7b-433c-ad31-ce2e28d37474/why_wont_my_soap_dispenser_work.pdfIn PDF document text
    • https://2903667b-e544-4972-ac7f-e5855aaa9b37.filesusr.com/ugd/2cc660_c914ea5066e449ea89d7e649ff856dc5.pdf?index=trueIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001f062.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1F062 68028 bytes
SHA-256: 08a898eed4e100fde90356307793198aab4fd532eb3008395443ae497ecdbe77
font_01_sfnt_off0002be45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE45 5420 bytes
SHA-256: caf4a65ed67e151aa4676c69736b039a3c1ba7c9db86c9ef6faff0749d5ecab1
font_02_sfnt_off0002d07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D07E 12004 bytes
SHA-256: a102b4c9b082123b013c38dffa3ca7c1ef0192cf14a0d425eab0443b7b577a62
font_03_sfnt_off0002f78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F78B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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