Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8952148084f9440…

MALICIOUS

PDF

69.0 KB Created: 2020-12-26 15:19:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 559d003e4e3e8241725873cfbebfaa9a SHA-1: d1fa1e631bb93e6c5b0a66c6e249573cf3425e2d SHA-256: c8952148084f94407a8fda41480343276bd9d4dcaa449aa9510df26733556c10
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by presenting deceptive content and leading them to a malicious site.

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://traffnew.ru/strik?utm_term=torn+rotator+cuff+rehab+time PDF link annotation
    • https://cdn.sqhk.co/zigimovovu/jajbPdl/56445909612.pdfIn PDF document text
    • https://cdn.sqhk.co/reserujaj/j7hjujg/72376736091.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/xapota/tamil_nadu_map.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/75562221150.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/xagijujaw.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/behold_our_god_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/kidikodufadatisuvujuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/719b898d-f1df-4205-b71d-8bdf4419e58e/38891073652.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/xampp_64_bit_apache_friends.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/8016545706.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/fekobazun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef34ca78-83f3-4d1f-845e-af33fb9e3fde/1970_amc_muscle_cars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1c007b5-d656-45f8-b078-22ce4bd31b1a/e_coli_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/mozilla_nightly_for_windows_7.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_off0000d385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD385 5000 bytes
SHA-256: adf768477ea45c62986ab1e8a435350753310e3687262c7b21d570cba7e164ac
font_01_sfnt_off0000e45e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE45E 10264 bytes
SHA-256: 639ff38ff6a6f76bd5beb118b54c9408d88c464fa65bb8e659a0bd68f7a57b00

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