Malicious PDF — malware analysis report

Static analysis result for SHA-256 20242ee2f1d36855…

MALICIOUS

PDF

99.4 KB Created: 2020-11-23 08:31:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8ce2fa5f386959b0438c9c80d5eaecff SHA-1: f52b923d9bc389b5862ed4c6ac04293b6188a0c2 SHA-256: 20242ee2f1d36855a47d3dfc926dd96556dc233c871075f056147f0fbf9dbb1c
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 0.9997

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://trafftec.ru/123?utm_term=dollar+dollar+bills+y%2527all PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5f97b130d7708.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405687/normal_5f99266f96454.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5fa0336c97f57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f86f6ffb606b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_5f9128426505b.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/dudigonifu/nijawutufeli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dd79abb-5408-407b-95a5-3f845040064c/zasuzozoxaluza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b767442c-ca35-4f3b-8bf2-d08b44279dc8/sixam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e46b8337-ee13-430e-92bd-5d62b7413e89/3741427102.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/gst_amendments_for_may_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91d4e717-9293-47f0-be31-c7e63367391c/bogukonagevurudedadan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc901083-9950-4329-8330-29dc1448c65d/43910001077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b889af-ab2b-4d57-8c83-4082a55e8bde/38355575814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6db5976-563f-45a4-bea1-6525e28a846e/tolunoruremobedikusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/465463f2-d8c4-4210-ab0c-03e63dc2392a/exterior_black_semi_gloss_latex_paint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18206093-133a-4a36-b896-8b7143415ae3/the_great_gatsby_chapter_7_reading_guide.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_off00014b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B6C 5096 bytes
SHA-256: c40f17ad8a61df40ec135f8ae637486076f5eaa09264621231034af983092e98
font_01_sfnt_off00015cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CDA 10340 bytes
SHA-256: 6ec511d6990b485b7c70a828e677f7f1b717c43e62040c5ccc3ec8af22f5f379

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