Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a991c1ee7c6a313…

MALICIOUS

PDF

83.0 KB Created: 2020-12-23 19:49:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a66a06b8f90dada720e3612f5a32741e SHA-1: 9ba76888de7f324b7490778419bc4b2c8907893e SHA-256: 2a991c1ee7c6a313bbf32c4cbdec49d99493bfb0d3caf1cc4eda60fe7407a2ec
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 0.9997

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://traffking.ru/aws?utm_term=biosecurity+adalah+pdf PDF link annotation
    • https://cdn.sqhk.co/baxafapunubi/tghhyjc/gemsona_maker_no_flash.pdfIn PDF document text
    • https://cdn.sqhk.co/xenetomapum/iKjbSgd/97366232979.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451736/normal_5fcb8f4c1673f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba6314f8-38c9-4f14-877d-919b97d26bcf/71937401210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89d58e30-23cc-4210-bfee-44b3725a9386/50871208633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24b5941d-1cae-4511-b222-25450e37a317/rise_of_generals_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/area_of_regular_polygons_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71685414-5793-4883-bc39-fe1033d71fa1/rakazafulatixudu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab745352-8d91-4152-8242-a99d434d3173/adobe_photoshop_cc_2018_crack_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69334bc7-a26f-4fef-8482-9d5a78f9aabb/google_drive_sign_in_students_accounts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0b7cc04-9b51-498c-ba95-f86880ee54ac/inter_vlan_routing.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/glenwood_arts_fest_school_of_rock_chicago.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_off00010a5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A5D 5396 bytes
SHA-256: 57cc7bd646db03bafce05b97ba78185a922e5d2ed4fd562b1acd99f7835cad6f
font_01_sfnt_off00011cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CBC 10076 bytes
SHA-256: fd4aadd44b47941234fa6afe9af17fadd78f566cd2cd5476ada4a0354cc8c3fa