Malicious PDF — malware analysis report

Static analysis result for SHA-256 86da3c9bf97a920c…

MALICIOUS

PDF

70.0 KB Created: 2021-02-16 21:30:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8c82c6fe0e948c1953d4a1c69474511 SHA-1: d412f7a4cc21c2d8a4e7bc82330e2956969756c2 SHA-256: 86da3c9bf97a920cf23080bd76f9935fdecd61d3963b6f23541561b4f152093b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=95+mustang+gt+distributor+firing+order
    • http://detonicro.website/emulationstation_android_apk4553a.pdf
    • https://cdn-cms.f-static.net/uploads/4427095/normal_600e550dd0e86.pdf
    • https://womerakuketuzal.weebly.com/uploads/1/3/1/8/131856195/4045274.pdf
    • https://waferipesor.weebly.com/uploads/1/3/5/3/135307907/f30e8.pdf
    • http://jetaxopavajuluw.22web.org/6380029441.pdf
    • https://cdn.sqhk.co/dopiporajen/2kih3jc/89086636269.pdf
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5fdab9982f1b7.pdf
    • http://espaceabone.com/defensa_nacional4k0n9.pdf
    • http://albl.ru/349771261139bh4d.pdf
    • https://xonuguzuv.weebly.com/uploads/1/3/1/3/131382030/vupizilaximu-jetiwoxorip-dobevij-pegerawafose.pdf
    • https://cdn.sqhk.co/wobuwozavenu/ehhhhjf/children_s_quilted_bedspreads_uk.pdf
    • https://cdn.sqhk.co/sevafeluba/Ige2die/revenge_of_the_ninja_full_movie_1983_download.pdf
    • https://cdn.sqhk.co/doxutijewu/fjfgnEz/that_s_life_lyrics_in_spanish.pdf
    • http://ginajazadunoxix.22web.org/grievance_register_format_for_employee.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/feliso/minority_interest_in_balance_sheet_consolidation.pdf
    • https://s3.amazonaws.com/nuxomigo/tarexonepad.pdf
    • http://nodefojabotozij.rf.gd/jacket_size_guide_zara.pdf
    • https://s3.amazonaws.com/tamovagag/27291607025.pdf
    • https://s3.amazonaws.com/gezizefefififa/effortless_english_file.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_off0000d3bb.bin
8bc1b01e4f904699a321d6649386a6eae5e232fc85d434572f2840d70ac577f9
pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BB 5520 bytes
font_01_sfnt_off0000e664.bin
1e7264161ed86301fbddd528ae1668d313c6aa12e2b19177d010b7cab10390b1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE664 10824 bytes