Malicious PDF — malware analysis report

Static analysis result for SHA-256 2583b2487e3f8da7…

MALICIOUS

PDF

77.1 KB Created: 2020-11-10 18:10:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 954a4daaa2dad521a9e891a004f7e791 SHA-1: d25d09c6115e5dbfaa44c88b1913a1cb525b53b7 SHA-256: 2583b2487e3f8da773723769d9d47392efeffa42d05317ff2fbf62d7b88c469e
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/strik?keyword=happy+go+monkey+2+andkon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4428045/normal_5f9caba3c4fbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404105/normal_5f948c7c3e4d2.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/duzexefemosaxe/apastamba_grihya_sutra_sanskrit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78514fce-1a38-45a0-98a7-55f973304ceb/skylanders_ring_of_heroes_tier_list.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/73453724077.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/youtube_app_free_download_apk_for_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be4554ae-0c84-4bd1-8aa3-ac0ecc8a5290/lopurofovobetom.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/lisemamiboragusotetowomo.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/38323683585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b931c9-d334-4cad-97ef-6c0cde36ac50/irig_stomp_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/tanojefiv.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/xiroj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E5 5232 bytes
SHA-256: 3a215ed043b1fa3ff8edc0c0beab6bb3ab206b874c8ceb15edc24c0758e8c693
font_01_sfnt_off0000ebb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB5 11540 bytes
SHA-256: c0494f40a899b43d20ab326a3cdd58208e2663daf60f898abbd5085c47b638c6
font_02_sfnt_off000112f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112F3 16084 bytes
SHA-256: f8a29ee99fa618751840f4bb470ac1c8deea637908770bd91c39adf1e18f92d0