Malicious PDF — malware analysis report

Static analysis result for SHA-256 c95f1ae4f2aba1b5…

MALICIOUS

PDF

67.3 KB Created: 2020-11-11 04:57:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bda583e62662d14f4b10cb7d42241f5c SHA-1: 24c72fc865c8cc4f97c787ee0b05d9d26728f45c SHA-256: c95f1ae4f2aba1b52dd49741e86a478cbc681fdcc6e949d077a94f71d815fa1c
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 0.9977

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?keyword=thoptv+app+downlord PDF link annotation
    • https://davovexo.weebly.com/uploads/1/3/4/3/134355956/7a203.pdfIn PDF document text
    • https://dokoxinizim.weebly.com/uploads/1/3/4/3/134305801/lonomuno_xipetetepizapif.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/tusamuwuto.pdfIn PDF document text
    • https://popilezofale.weebly.com/uploads/1/3/1/1/131164236/kowijusanineburemumi.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/biwubeleba/mountain_ridge_middle_school_website.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/hamfest_maryland_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fffb5831-0851-4a48-97c8-17b1bd001d20/vijepab.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/warisesif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f20b3e4f-da4a-4106-ad43-659fa66be3a7/zibozuxovatibudijorodetur.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_off0000cd2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2A 4972 bytes
SHA-256: 5434090c09affc89287710c968493d0856011988d2a0148a2e1aa6b2e1ab438e
font_01_sfnt_off0000de22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE22 10328 bytes
SHA-256: b91e911022a1e8702c1803fda8d20e5d803b561e3dcad7390a3d8b6939fb1204

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