Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a27c3740441c62f…

MALICIOUS

PDF

80.3 KB Created: 2021-02-18 15:07:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: ee9e0eedfc2db2731446e9e205585e51 SHA-1: e4e0c37c6c8a44e2429a5e411d041ca7ee802b90 SHA-256: 2a27c3740441c62fb3fbb7987ebf959ea5834ed86cb4b7602d8191fdc64626b2
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'baarspo.ru', which is likely used to host a malicious payload. The document body, though heavily obfuscated, suggests a lure related to a 'manual', aligning with phishing tactics.

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://baarspo.ru/wix?keyword=blueant+s4+manual+espa%25C3%25B1ol PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4404524/normal_5fe5992764cdb.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/enigUia/zombie_castaways_cheat_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/pubodegosog/ETgcYjd/frontier_warrior_hack_appvn.pdfIn PDF document text
    • https://cdn.sqhk.co/retagigimusa/ahi2iiy/bevipap.pdfIn PDF document text
    • http://sedouche.xyz/45507772857j9ky1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403408/normal_5fd9e3182a201.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/bhasqKU/audio_pro_addon_c10_vs_sonos_play_5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402297/normal_5fee436602f89.pdfIn PDF document text
    • https://cdn.sqhk.co/munuluxel/BYvIgij/dali_images_money_heist.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/4hijhnR/wupagisipakabizizepigot.pdfIn PDF document text
    • https://cdn.sqhk.co/xamozafi/cEgdmgj/3217869722.pdfIn PDF document text
    • https://cdn.sqhk.co/salefudodid/FGW0Ige/hockey_nations_18_online.pdfIn PDF document text
    • https://cdn.sqhk.co/bonosexov/ajfmcUj/kexuvezufamuninedepabizep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500417/normal_5fe2bce0e1010.pdfIn PDF document text
    • https://cdn.sqhk.co/sizozizaj/MiidbCL/zombie_objective_mod_game_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lososimap/bidadari_surga_karaoke.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/febuzotiwovuvunejezorule.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/weekly_home_cleaning_schedule_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/93140373560.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_off0000f6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E5 5216 bytes
SHA-256: 39f4651155f2d2890c35347cf8861ca7ae962ebc5d2a4177486c42c460aa2ba5
font_01_sfnt_off0001085b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085B 13120 bytes
SHA-256: 573865085156948ff95f43429b3975b5746244965ca31d7d7f83329cedd296da

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