Malicious PDF — malware analysis report

Static analysis result for SHA-256 6361fcdfabd4e940…

MALICIOUS

PDF

61.6 KB Created: 2020-12-10 08:00:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ae9a468d87d8d9ea1985d2e1aa6a5355 SHA-1: 910a46d3cc1646c1bd1262089e2227a42b16c9e0 SHA-256: 6361fcdfabd4e940b95ec64eded38e8b8139e4f0f8d32d4b2e614945e2e7ad33
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive 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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafftec.ru/123?utm_term=liftmaster+ats2113x+owner%2527s+manual PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b10b1e00-05c7-44b8-8704-1e8b56770e88/biology_concepts_and_investigations_2nd_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/042dc53c-4fe9-4ed4-bf60-f11c0b480a98/us_navy_seals_in_vietnam_pics.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/formed_by_glaciers_piano_sheet_music.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54b94084698658e7b646c/t/5fc9e9cd52b5874c859410c1/1607068111579/2413113104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a5b4336-3329-49ae-89b3-db54d4260cee/pixel_car_racer_mod_apk_horsepower.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf67934e98326c0208b81d/1606379411316/sports_illustrated_swimsuit_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/anti_malware_android_test.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/kiss_the_rain_sheet_music_piano.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf6759ee0f32b87193ea7/1606284917990/polyatomic_ion_practice_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/bacterias_libro.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/bikowuzulijinagogeser.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_off0000b2b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2B4 5396 bytes
SHA-256: 0d3180a8cee26a39083e309c848acccf6dae0937e3fa650bf039077e401c69c5
font_01_sfnt_off0000c518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC518 10392 bytes
SHA-256: 4e7444c517c6f6f7632c83e0bdf04f3cabaa73110efbf2e2e4fbb4417af531f7

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