Malicious PDF — malware analysis report

Static analysis result for SHA-256 543b6839ec56aca4…

MALICIOUS

PDF

76.8 KB Created: 2021-03-25 10:05:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1f0ddc270f4e9062a86443bb4a5ebe5 SHA-1: 987768d009704fecef5e595afd647216de958ce1 SHA-256: 543b6839ec56aca4a9a0a3b4fbc3bcf6319fd85db0a2f541231bddfbb4b6bb0f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'https://jumiwimov.ru/strik?utm_term=fitbit+charge+3+review+2020', suggesting a phishing or malware distribution lure. While no scripts were explicitly extracted, the PDF structure and embedded URI are strong indicators of malicious activity.

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://jumiwimov.ru/strik?utm_term=fitbit+charge+3+review+2020
    • https://cdn.sqhk.co/duxadikoti/cAB2Cd1/mujixodipasi.pdf
    • http://jisuvakuwiraza.medianewsonline.com/will_fifty_shades_of_grey_be_on_netflix.pdf
    • http://lomuwugevona.getenjoyment.net/33837121103.pdf
    • http://taxokijoba.sportsontheweb.net/syllogism_rules_bankersadda.pdf
    • https://cdn.sqhk.co/domuzusud/jV40xif/35246047188.pdf
    • http://bumosid.getenjoyment.net/pofevata.pdf
    • https://cdn.sqhk.co/tategupet/jigghif/vr_roller_coaster_free_download.pdf
    • http://nijepatexosanus.medianewsonline.com/nobakaxexu.pdf
    • https://cdn.sqhk.co/feledigowud/hdjjNgi/space_engineers_warp_drive_tutorial.pdf
    • https://cdn.sqhk.co/xarozowuzosa/7VY6EDC/equalizer_pie_pro_mod_apk.pdf
    • http://kevifiregerufug.scienceontheweb.net/94671075550.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wilaroxu.atwebpages.com/being_and_nothingness_sarah_richmond.pdf
    • https://s3.amazonaws.com/pegozegi/rememozijowatisotalib.pdf
    • https://uploads.strikinglycdn.com/files/4a66b5d9-b520-4b2e-ad1c-6f2ba613c07c/islamic_names_meaning_in_urdu_book.pdf
    • https://s3.amazonaws.com/rakabexozu/lavubuxatofejuwiveb.pdf
    • https://uploads.strikinglycdn.com/files/59009f51-99ec-4785-8b32-052ce33b0b48/gpsmap_62s_valor.pdf
    • https://s3.amazonaws.com/sizabo/diaguitas_calchaquies_informacion.pdf
    • http://xenezipulugiji.atwebpages.com/types_of_artificial_intelligence.pdf
    • https://uploads.strikinglycdn.com/files/b2e404ec-eb94-4f7d-a6b2-582e4ef7879d/latest_news_india_pakistan_live_hindi.pdf
    • http://zibelasavu.atwebpages.com/anterior_cruciate_ligament_reconstruction_rehabilitation_moon_guidelines.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edac.bin
67e049362a294f52e657a64587d34248a650d67d2d62fcdb7a8a04a59e8ec295
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAC 5536 bytes
font_01_sfnt_off00010099.bin
4eb2c2a66874167daf0bf58248a01bc35b2cc9d7d8f495be8aa4bc2dddb9147c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10099 11060 bytes