Malicious PDF — malware analysis report

Static analysis result for SHA-256 a53896c0972f01fe…

MALICIOUS

PDF

72.3 KB Created: 2020-12-26 15:47:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b3d6512ff02e82b39a83db83380ba517 SHA-1: 64ff17211b68fb49a075551c12168b30090f933f SHA-256: a53896c0972f01fee255c2bbf0bc482a1f4a02372199ba79439b5b902bb07597
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-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://trafffi.ru/123?utm_term=acapulco+shore+6+episodio+2 PDF link annotation
    • https://cdn.sqhk.co/gikunixa/c1vdjhy/color_tap_shoes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500200/normal_5fd638c648964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_5f97502e1cf88.pdfIn PDF document text
    • https://cdn.sqhk.co/sukexesi/Vgegfij/36508982896.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/9e30955c-7e5b-4f52-9dcd-77d369c26132/psn_codes_generator_apk_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd584b68-07b5-4981-99fe-a93448f925a3/mx_player_pro_apk_latest_version_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b36f7cda-98de-4447-b322-60164e90b332/58019616818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8e9fb6f-1c08-4227-826e-f7a54966d652/orioles_spring_training_roster.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f74f28d-5733-4c31-bb94-63ed29ec38bb/10722554619.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f79a87e5-6e4b-40b8-b8be-30ae07464e01/jufubagaziles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cb3efed-f6f2-468f-9923-6fbd339085d8/gidebavogesok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/443463e6-e5ce-487e-9fe5-8ffbcbf72325/cheboygan_county_property_search.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbe6d037-ce3b-4c75-acbf-8ae302d89a91/wawijuzuguxivekatuzune.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_off0000d9cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CF 5436 bytes
SHA-256: 5c764cf2caf34ebeaba209a0044cf04c31ecfb2e7704dbce848425c13b2c0295
font_01_sfnt_off0000ec46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC46 12252 bytes
SHA-256: 31ee256c9b46f5c21aa3cce6c0980efeb54b7af36f65853288d38ce733021e49