Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67cb5b0d4f89a47…

MALICIOUS

PDF

76.4 KB Created: 2021-03-20 16:06:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f43a761238eeeb0bfcbf7f8eed907286 SHA-1: 5765ab77ed77bf911ab3aa323881cd213f958ca1 SHA-256: e67cb5b0d4f89a47741078abb69e01db7683bc7dd39660b8d2d4a6b70f0ef25b
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 0.9997

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://dafemum.ru/123?utm_term=volkswagen+owners+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/nujusowidom/eggYjiC/64214412941.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501231/normal_5fc7a5e8af304.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/hb3KjdG/regency_theatres_van_nuys_showtimes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365551/normal_5fc9dcd4e6ac7.pdfIn PDF document text
    • https://cdn.sqhk.co/bejomewuv/eTlje0v/wepeg.pdfIn PDF document text
    • http://peskomment.ru/what_is_stronger_polar_or_nonpolar_bondsolk9q.pdfIn PDF document text
    • http://4338bacchus.com/troy_bilt_pony_battery_sizesrfiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427795/normal_60558ac727833.pdfIn PDF document text
    • http://cardio-active.site/lipulamupipkg9i1.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/biL9iaJ/5884982580.pdfIn PDF document text
    • https://cdn.sqhk.co/tolononof/jaeje7d/chase_mobile_checkout_app_store.pdfIn PDF document text
    • https://cdn.sqhk.co/loxepafigav/Mnhaja6/mechanical_engineer_technician_salary_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisimak/4JiimUE/73573249213.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378167/normal_5ff1ccd26b232.pdfIn PDF document text
    • https://cdn.sqhk.co/tuzojivemepe/gfhbWhi/aldhafera_ffbe_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d06b74c7-6454-4541-bd3b-60dc05d88912/jesisul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3676521-d6de-46e7-b662-531bd54eb1da/how_does_lord_of_the_flies_end.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49160827-84b9-4fb5-9392-8452aa77a574/salupemawutozikosaromebuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e4ce32c-50ff-449c-991a-46fa1e197a09/lopawoxalex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ba6f41f-a701-4102-a81b-bb25ccddb184/how_to_pair_samsung_soundbar_with_subwoofer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8f840a6-c938-4c4b-b66d-eb38ab15e75a/courteous_expressions_worksheets_for_grade_3.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_off0000e9e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E2 5480 bytes
SHA-256: b396fac06927547162b3f02a9c2bc522c112ed80014133a9d8f2ce873ff84559
font_01_sfnt_off0000fc8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8A 11636 bytes
SHA-256: 9e4f9f77ca099dc66db636ccf2e49b9aebda30c89ecf071040be78a9acb9df67

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