Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d5f1199ccb5f7e…

MALICIOUS

PDF

112.6 KB Created: 2021-03-14 05:11:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bb2096a7e77711c036dbb402882e0f6 SHA-1: 9959b5378275a58d7bbc5bae3c62bf131c09706d SHA-256: a5d5f1199ccb5f7e527bdc4c4068b89260753a623fabf97aa4037a96bb5422db
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics as potentially malicious and flagged by ClamAV. The document body, though heavily obfuscated, suggests a lure related to a graphic novel summary, aligning with phishing tactics. The presence of an external URI points towards an attempt to redirect the user to a malicious site.

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://kuzutuzo.ru/strik?utm_term=persepolis+graphic+novel+summary
    • https://cdn.sqhk.co/bepesewutu/capGwRu/real_car_parking_3d_hd_mod_apk_download.pdf
    • http://help-copyrighteamservice.com/59601520716pf9f4.pdf
    • http://neditaxuvim.getenjoyment.net/erste_binomische_formel_bungen.pdf
    • https://cdn.sqhk.co/zesunotu/RC6t97D/13719204618.pdf
    • http://fuvesozufinefi.medianewsonline.com/15939253754.pdf
    • http://rexevivejegox.scienceontheweb.net/34678605105.pdf
    • https://cdn.sqhk.co/towevefizub/hib1ggb/wyze_doorbell_amazon._ca.pdf
    • https://cdn.sqhk.co/masamiwe/Wihghag/shooting_games_pc_2000s.pdf
    • http://opros.xyz/840333215547ifec.pdf
    • http://nepatokada.mypressonline.com/how_are_guidance_discipline_and_punishment_similar.pdf
    • http://xegisepereti.mygamesonline.org/ap_grama_sachivalayam_answer_key.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sodexodape.rf.gd/ajay_devgan_ki_platform_movie_picture.pdf
    • https://uploads.strikinglycdn.com/files/3033f3d5-98e1-4f24-bd01-01d4d74eff93/taxonomia_de_bloom_verbos_objetivos.pdf
    • http://vimixof.onlinewebshop.net/all_the_kings_horses_equine_rescue_facebook.pdf
    • https://uploads.strikinglycdn.com/files/82dda01a-cdcc-4940-83d9-78d8102fa1ab/fedugopopajujonuxeb.pdf
    • https://uploads.strikinglycdn.com/files/e4ca6550-d7e7-43fd-aedf-dc9a32b7d67c/pameroka.pdf
    • http://sopupemav.epizy.com/britax_boulevard_clicktight_convertible_car_seat_installation.pdf
    • https://uploads.strikinglycdn.com/files/d3168ee0-8963-4e03-b4f0-6a57491df400/60016572314.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016341.bin
b905efeb45dda527d1af250c004d8987615bdd2daee05001fa9dd4c96e5ad483		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16341 5508 bytes
font_01_sfnt_off000175e5.bin
1cafca634b66f5e592ebc4132723fb4ca266a137ec4c993a538678cefb06ad07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x175E5 11792 bytes
font_02_sfnt_off00019dc4.bin
d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19DC4 16060 bytes

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