Malicious PDF — malware analysis report

Static analysis result for SHA-256 a031726e83975f49…

MALICIOUS

PDF

68.2 KB Created: 2020-12-20 19:31:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 65ca79433d13e1020f0372722dc509cc SHA-1: 900661114d1a31570c79f68ed836e623db54bb02 SHA-256: a031726e83975f494f5ec55abec239d18d698a919cb8bcbd629cac49ab7eb5ec
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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://trafffe.ru/aws?utm_term=android+10+android+one+mi+a3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f9281c5bba23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487194/normal_5fb83a096d115.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366655/normal_5fc55489c289c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f872546637d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408001/normal_5fc91061d51f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc64c582e537a05ef2dcca0/t/5fceb9455664f342cf1f7916/1607383366572/black_labrador_christmas_cards.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdcba3646033b444b395ad1/t/5fdd136fd8383479490e7696/1608323952613/32400600141.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce79424981a0308257053f/t/5fd5f5b4034a586a4f389e3c/1607857589110/1088856692.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/12814339221.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc70aeab2e29c7ba991be9b/t/5fd66a570f11661d4c2ce19e/1607887448429/consumers_reports_washing_machines_2017.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27abee9fc3622d52c1c80/t/5fc3ac0de18c5c478e6bb722/1606659086030/79772249371.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/fludrocortisone_side_effects_dogs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a0ccd743eb43444a4edf/t/5fd085ff5c296e7a6876fcc2/1607501314041/dagugobasidid.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/60887255869.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_off0000ce47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE47 5108 bytes
SHA-256: 20afc023c782313bd41178a7edfb5d28a6ff6d6cd56296606d7e814c6b97772b
font_01_sfnt_off0000df9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9B 10820 bytes
SHA-256: a63aef3880c1c3dc46ce9bd88ac4531422fae797b34879ce8066a252548dbc72

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