Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e202790de27c41d…

MALICIOUS

PDF

68.3 KB Created: 2020-12-04 13:31:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 53509ef4adaf11e2fd0e434526d4aa1a SHA-1: 9100b367a483744659436ac5e73dab634261e8dc SHA-256: 4e202790de27c41d6309f10f428d1758f11fe36731f9f1333eeb07ebf4557891
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-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://traffine.ru/aws?utm_term=hand+embroidered+sheets+and+pillowcases PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401517/normal_5f987e92ce399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5fa1ebc5cc9b1.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/cbd73145-9975-4d5e-8b9c-b5cd6bd4d6a3/12599396420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7b3321d-934e-4810-b3dc-042ea6fff634/monepowuwujawenovap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14593e97-8943-4d37-a787-77c13cb46899/bemilenegaxuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/mazugezijap/94934080755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/415a59a0-8891-44dd-aff7-25ed330bb8b4/peso_del_alambron.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f61845e-dee1-4579-9a76-28670ae52af3/truck_games_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62fe8eb3-3bd1-46e7-b630-b6e9847c2a6e/gimiwelolaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b398bfe5-8fd6-4d1f-a16c-b6426c0a08ab/rowifegubutulo.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/didepetoxijuwi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e1846b97992eb55bfc03/t/5fc37e1d145a8629dc1d6ef1/1606647327656/apex_friendship_middle_school_supply_list.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/karate_magazine_june_1970.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_off0000ce3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3C 5504 bytes
SHA-256: 88e0526b893a6bb4fc8c27c9879f9bc848d8027528445a71a8455127aa624959
font_01_sfnt_off0000e0d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D1 10608 bytes
SHA-256: 34ee55a82ce593f77c843e9326f30d2bda26d1f469af5bb40b5b2544ecb2357a