Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6fffbb331abcf1b…

MALICIOUS

PDF

74.2 KB Created: 2020-11-24 19:05:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a9793d34d51d16bf6ce68fea8bf74ab4 SHA-1: dbb25829710bca792ab0852c8dc94f3680bcedc5 SHA-256: e6fffbb331abcf1b3e6cd0cbaceae85a4370994465fc975ca84224b95df8002e
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 0.9981

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/aws?utm_term=whatsapp+status+romantic+song++mp4 PDF link annotation
    • https://serivuzoforin.weebly.com/uploads/1/3/4/3/134334639/5173347.pdfIn PDF document text
    • https://tibulewozimok.weebly.com/uploads/1/3/4/0/134017320/ramisu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369506/normal_5fb725c40e648.pdfIn PDF document text
    • https://nanufuso.weebly.com/uploads/1/3/4/4/134443711/43e1862888a57ab.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/afef4647-ca72-4ccb-a189-65c909a97cbc/dumodinejofasovodufibumeg.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/the_dorset_school_dorset_vt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31826fae-bec0-4db2-a9d8-af6aca8b6d36/venerax.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/sloppy_stage_2_turbo_cam_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c119812-2ed0-406f-bd8a-966c5bf8dbbc/bolifoboxizadog.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_off0000e625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE625 5416 bytes
SHA-256: 1227115facbd54329aff0940f1cd59367ba4f3c517ac78a8ff9419635865fa06
font_01_sfnt_off0000f87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87E 10692 bytes
SHA-256: da9385fc0293f7e722db783e9f0dc388a0d22a393e9327d20c321c23632ec669

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