Malicious PDF — malware analysis report

Static analysis result for SHA-256 8283d28e23b59e58…

MALICIOUS

PDF

63.4 KB Created: 2020-11-19 20:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b8359a163b2d0662a3438fce50ef0c2b SHA-1: 96aceba958b73c89373fa6b52dcb63ff9e23910f SHA-256: 8283d28e23b59e58c34cbcffb93eb1685d1b14acf0ff1977fa5b3e829c861038
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 0.9999

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://traffnew.ru/123?utm_term=palm+beach+lakes+church+of+christ+live+stream PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451750/normal_5fab68a7de704.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5f88a9aca4649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385647/normal_5faf046edcd50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478387/normal_5fa7e9a962aa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f874da7e99ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389080/normal_5f8f5983db756.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5fad7d7601361.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/kufazete/81961701904.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/koran_865_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/it_is_noon_in_spanish_translation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6e08bc3-fea4-4fa3-bc62-131b4b32c1ba/44645352186.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/bronsted_lowry_base_vs_acid.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_off0000a6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EC 5384 bytes
SHA-256: 4ee1e5419edd44d369aecdfe22767852535f593007484369fd372f7ac56e3579
font_01_sfnt_off0000b91b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB91B 9904 bytes
SHA-256: c00649050e5d147769347280d8a60a3c461d80d2c0283551832a267da21f8048
font_02_sfnt_off0000db36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB36 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e