Malicious PDF — malware analysis report

Static analysis result for SHA-256 04534311e97308a2…

MALICIOUS

PDF

71.2 KB Created: 2021-01-02 16:39:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c95a72745e0d38345a8c1e7143086773 SHA-1: d0d6a3092ac1cf2b0892150daeafa6b178bc1070 SHA-256: 04534311e97308a2722fe75bf8e00bb342cc889bc16fd1625f1bb1bfe06cc4de
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://trafficel.ru/123?utm_term=chapter+7+test+review+geometry PDF link annotation
    • https://cdn.sqhk.co/fakupavod/fhgigXx/hume_bank_hume_mo.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/ie7ggz2/tavijaluxifuti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392651/normal_5fce9e7b79eac.pdfIn PDF document text
    • https://cdn.sqhk.co/lozuzupadis/EiijYig/48622521086.pdfIn PDF document text
    • https://cdn.sqhk.co/kokuxisa/jeGnwij/gakimufolokiruzexubut.pdfIn PDF document text
    • https://cdn.sqhk.co/xebibugekux/Ghf1igz/lighting_text_art_lights_effect_on_texture.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/b7822577-816c-4f4a-bf8d-657dd350ff98/gujetowezotenanenujokara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36d8720a-1c87-43cc-88e0-9148139bdd4f/28078641034.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aefa225-19ae-414b-b1fb-0d6567844864/xinemifopuzolamavijasiduj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e53cf92f-527f-447b-8409-2ae73b4d1276/51462491868.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/17091807286.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af8d5bf9-9088-4fbd-82a2-ffd5d7fa8791/zugalokitaloxazafetowuji.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/vogevilunilebezunesepir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/437ef9b2-992e-4e62-aa66-ac03cf2dd5a2/tibapoloroni.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_off0000d796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD796 5440 bytes
SHA-256: e9a5a1ceb548547ad20ac63d2b14801282df9d6153c85acc18467cacf12ced42
font_01_sfnt_off0000ea0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0C 11196 bytes
SHA-256: efbefec38b1423b14069bb5a755bda974bdffb5606763c44cfd3e4708be291d8