Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfd45531c64708ee…

MALICIOUS

PDF

75.6 KB Created: 2021-03-25 03:42:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 8dda29fddf772232542d4d98ebc19400 SHA-1: 20c68d8b8c02f8860cd0c45719ca7852a2e18892 SHA-256: cfd45531c64708ee8c6178c69b93708838b226a26a5e64aceeaf84906f0f8971
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample was flagged by a machine learning classifier and ClamAV as malicious, with a specific detection name indicating it is a phishing trojan. The presence of an external URI pointing to 'fokemale.ru' suggests a lure to a malicious website. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document attempts to trick the user into executing commands, likely to download and run a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://fokemale.ru/123?utm_term=windows+7+bootable+pendrive+software+free PDF link annotation
    • https://cdn.sqhk.co/xuvisisitinu/aiayhfP/alien_shooter_2_reloaded_mission_3_secrets.pdfIn PDF document text
    • https://cdn.sqhk.co/mipijotom/GiaxbPQ/monumazolituwezerukodilit.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/ijgcdgd/transgender_surgery_before_and_after_pictures_bottom.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/Uidzihg/70800564240.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/ntiie38/homescapes_cheats_2020_no_human_verification.pdfIn PDF document text
    • https://cdn.sqhk.co/wenejusuzixe/dIjddij/48835550500.pdfIn PDF document text
    • https://cdn.sqhk.co/jatizaru/cgcxNia/74089735199.pdfIn PDF document text
    • http://rivilidopu.medianewsonline.com/delemagopujakolemawo.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/VHrg5oT/43519634073.pdfIn PDF document text
    • https://cdn.sqhk.co/pinepopowig/ihQhchh/kart_mania_one_tap_kart_racers_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/kakapoxavu/ijHshdV/74082949366.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/fVPhj8E/mijuratoxujedo.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/feliso/black_desert_mobile_apk_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f84fb211-6075-432a-9c82-5ab01ea2df94/what_kind_of_lightbulb_goes_in_a_range_hood.pdfIn PDF document text
    • http://vesedakowata.onlinewebshop.net/mewepenikokaxozejagi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dea4ea25-4224-4972-a16a-b8ae268c0ab4/monetibesivomuzakivewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80c95953-bff3-402c-bb75-a9de61d6ed61/be_the_center_of_your_own_universe.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/roxuv.pdfIn PDF document text
    • http://foxukekamusun.onlinewebshop.net/32579396232.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/ryobi_1700_psi_pressure_washer_parts.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_off0000e6b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B0 5420 bytes
SHA-256: f7d8f394f0f4f22d3117408778c533d1bf084e45c4b2c04b661982533a62a30e
font_01_sfnt_off0000f948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF948 11956 bytes
SHA-256: 0dc389b346d77d4a7e3246443adbe71f15638dc5ac19614683268af5fa5966a4

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