Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c7b3e11d170e12…

MALICIOUS

PDF

83.6 KB Created: 2021-03-30 02:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e81500b7b558ec73e8525c6273986749 SHA-1: 5439335b6057e6482b0b2a5b3273c2e396fa47a3 SHA-256: 02c7b3e11d170e12cb568a28c8a85de7030ea968e46f38f6f77b3a2b80f91725
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 0.9991

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://druttle.ru/123?utm_term=acute+acalculous+cholecystitis+treatment+guidelines PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386620/normal_5fc68215e991d.pdfIn PDF document text
    • http://wugegifa.getenjoyment.net/durivag.pdfIn PDF document text
    • http://xawamiwupajev.mygamesonline.org/common_core_math_workbook_grade_4.pdfIn PDF document text
    • http://suzofovolavuk.scienceontheweb.net/26937356180.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417222/normal_601af9bf39545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424647/normal_601f5f4bb2e9f.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://uploads.strikinglycdn.com/files/69081075-cd88-48fd-b03c-256dbeb672f1/gaxejutijafinoridibilalej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d1e69ec-6162-4bdc-ab5c-fca9cd0a02ad/gefolojufenapipek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64d71979-ae3f-4a0d-ab76-ad861f11a806/american_history_x_edward_norton_workout.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e19f24-fd97-42ea-be7a-218cf0b8d793/can_you_customize_xbox_controller.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/lojunejujojizosunozik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e8df858-f83e-4c04-a0ae-549478e5e8f6/tumoziwiwinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b56fd2b9-68ac-468b-9ac8-6c6d3567e266/top_10_song_in_nigeria_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4d14813-d3ae-473c-bbb1-ed464e83e120/how_to_smoke_turkey_legs_in_a_masterbuilt_smoker.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/55735748631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f71f5a07-ded5-4943-a62d-988a15c7f344/princeton_review_mcat_general_chemistry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/242193ed-620f-4348-9aa3-47a0c42c94df/40218974607.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/10798713076.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/maregipetit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b8cc65f-ec3a-4d15-9415-8842aa06faf5/asus_maximus_vii_hero_bios_flashback.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03d036d0-43e2-4f8d-b1cc-888255f4817a/terry_pratchett_quotes_witches_abroad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/035838f8-1c76-462e-9c71-299e8af97b96/powermax_fault_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/any_video_converter_for_android_phone.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA6 5324 bytes
SHA-256: 3e09a239c2c8807b59dfcbd40909c62baa2ae3ac99a8e406de6bcff728c4a31e
font_01_sfnt_off00010c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C94 10996 bytes
SHA-256: fea2500611a7cb200830d15434a4e10ba5ed4b0b00c8e2624dcf3d408b5b58d2
font_02_sfnt_off00013206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13206 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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