Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf26aa5c80b90a3…

MALICIOUS

PDF

82.4 KB Created: 2021-03-30 04:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3f236967765b1b6f5cd446b3b9f6de7b SHA-1: b2085d5123aeef6b8aa720256a14e0ee5834adfd SHA-256: ccf26aa5c80b90a35d480cd3e1a07fcf9eb7ef6d2fb487a57f85e57df63967c8
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a fake-CAPTCHA lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/wix?keyword=astral+lucky+block+1.7+10 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485822/normal_6036c4361c726.pdfIn PDF document text
    • http://morpeoplelife.ru/buxanuweledubatoxivomaduapwli.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485705/normal_5fee626b3943c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414486/normal_604b94fa2504a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460045/normal_60251ecd52fb6.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/YSH2hhW/42035960152.pdfIn PDF document text
    • https://cdn.sqhk.co/kerametunal/dCcNidg/pac_man_fever_album_cover.pdfIn PDF document text
    • https://cdn.sqhk.co/sevijeruba/pRigK2m/mineral_spirits_on_wood_floor_before_staining.pdfIn PDF document text
    • https://cdn.sqhk.co/resozasevej/gghiehi/rally_car_driving_experience_uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386828/normal_6035fc123051c.pdfIn PDF document text
    • http://kudretbozaci.com/36351400189ybmjb.pdfIn PDF document text
    • https://cdn.sqhk.co/ginijetemepa/DiahaxJ/34899707276.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/siwixomudit/leaf_footed_bug_control.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e634ea6-381b-4a84-bbba-1b94f4d2ec49/8618639807.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48c616dc-1cd0-493a-b4ef-7d3234b9e093/54220150034.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/juretut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17836317-3332-40f1-800a-fe2d300a781b/how_did_pangea_broke_apart.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/x_core_sprinkler_system_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83fec486-bf37-4a78-8458-d47cfb9a24a9/verbal_irony_examples_in_romeo_and_juliet_act_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2979359d-80c8-4b70-9327-0d37098c701f/44040936715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aab38ef-a8c0-4710-9c5b-e3dbfcc045b6/muboponagitupivepun.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/google_drive_bng_idm.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/one_punch_man_season_2_vrv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd22ddec-cbd3-447b-b504-509960aacb6e/mujiduzugurajoximuponaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e913afa-7807-43a6-9fb7-58571b623955/sony_rx100_iii_iv_v_vi.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_off000101a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A6 5396 bytes
SHA-256: 63bd8fac68eef2db70355cc4fab2e13f14cdbd2f803075e7feecd5c8f6dd1cbe
font_01_sfnt_off00011427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11427 12244 bytes
SHA-256: 2e508f037c6447f4f385afc6ba73bfac24ed309221ad686b14c99aa920dded1d

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