Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5e030cd7bf84d55…

MALICIOUS

PDF

95.6 KB Created: 2020-12-07 10:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: bca5d72164d95efe9854ba49fc43e7cc SHA-1: 93c9653ab091c588c5c7380a225fb358d0c47665 SHA-256: d5e030cd7bf84d55d04a7e7e2180a14e8cd1345cffa0e6d529a11e58c6998825
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=showbox+apk+download+android+latest+version PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5fa03f9edefdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370996/normal_5fc512d17a646.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499653/normal_5fbe74230b438.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/4690365b-58f9-4056-b5ab-3402fb69f5b5/25058915778.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/65459416564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b24f86b-8a36-43a4-8989-df5b122e218e/67927045438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea7d3bca-8aa0-4106-b5e2-c59d72bd7a2d/tizufuvobezaruke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e8885db-a695-42a1-a8b7-484e58c47117/8905992653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7156b27-3474-44b2-9c51-6adeb5a05014/26327658923.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/ohio_attorney_general_safe_form.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/98133398159.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_off00013a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A4C 5576 bytes
SHA-256: 79bf55822a3b46243a52693b5dadc3f45c3cdd425bc0eab7cdfd3a31baa37def
font_01_sfnt_off00014d4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D4B 10556 bytes
SHA-256: 362126faca8f8ce055b07c2ed775d1617be905d90e88a615a2250ba04e88deff