Malicious PDF — malware analysis report

Static analysis result for SHA-256 812770752ab93b08…

MALICIOUS

PDF

72.7 KB Created: 2021-01-17 15:35:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0774fd0e0246317f93f10001691d718f SHA-1: 2ac656e939688e629d31cf788c52e487e4a68bc3 SHA-256: 812770752ab93b0806b9c8c82342d71c8e60ea0bd9265e333ed20849529991b4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document's content, though garbled, suggests a lure related to licensing guides, aligning with a phishing attack pattern.

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://trafffe.ru/aws?utm_term=biztalk+server+2016+licensing+guide PDF link annotation
    • https://cdn.sqhk.co/tipapija/Kbijgf4/82833778488.pdfIn PDF document text
    • https://cdn.sqhk.co/nalujujoso/ihDjajh/2d_pixel_strike_survival_shooter_indie_games.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/gI0Mjbz/kaiser_jobs_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/vipabure/jecnjgU/ge_bluetooth_smart_switch_smartthings.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/ihhcfqD/1275851457.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/fcCwhgV/zenox.pdfIn PDF document text
    • https://cdn.sqhk.co/muvetowiripa/gz2khaF/20964836361.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415740/normal_5fb2901d83d0d.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/73sjGib/97726771169.pdfIn PDF document text
    • https://cdn.sqhk.co/tumufiwusifo/dgOicXc/swear_word_cookie_cutters.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/hjiija9/19482078269.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vebenok/bhagwat_katha_ki_aarti.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/67849685431.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/android_device_folder_path.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFB 5584 bytes
SHA-256: 84fdc18de1f727f772cc48010168c7e108cab0d407f7d31e4f527a26ada80e34
font_01_sfnt_off0000e30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30E 11016 bytes
SHA-256: 7e9eb58c2fec29e330d9b6078f4985aa99c9a636bfa069b6a32c4d4cd4202fbd
font_02_sfnt_off000107ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107EE 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378