Malicious PDF — malware analysis report

Static analysis result for SHA-256 16002380fbffcc5f…

MALICIOUS

PDF

67.7 KB Created: 2020-12-18 04:46:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7fbad0f24d48366b985d6f4db7d18bd2 SHA-1: 7ee59f2b0c64efb0be54238fc6460185eaa9b9e2 SHA-256: 16002380fbffcc5f012be1a441874163af21dba4c5bf6a996b3e97c83a4a12ec
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a malicious site.

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://traffnew.ru/strik?utm_term=accounting+chapter+8+study+guide PDF link annotation
    • https://lekomuge.weebly.com/uploads/1/3/4/7/134773229/1990914.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405945/normal_5f96b9ec07493.pdfIn PDF document text
    • https://fexifeter.weebly.com/uploads/1/3/4/6/134612515/joxasa_zopinuzer_tomanulodoga.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/c245b827-3751-45ae-940f-6f22b47634e7/gikubasijudowasawegam.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/felovusefogim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6985a8ec-1e70-43ea-a199-2c1997e73c91/puvofaped.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/identifying_character_traits_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c65ebb85-77b6-4b5b-9cda-abeb73db9d95/nurewujixoliwetidazos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4a955147b14804295225/1606371992536/important_themes_in_the_outsiders.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6e663bcf5f06bcb75839b/t/5fc82f677ff5a343ebebaafc/1606954859052/uncertainty_principle_energy_time_derivation.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/anghami_apk_without_ads.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_off0000cbed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBED 5588 bytes
SHA-256: 52d23cf7f4ebc40dbb9ee3e625a2b2a989fc0514206c9d748aaf64a8fcdf0ece
font_01_sfnt_off0000def2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF2 10192 bytes
SHA-256: e3789edae2fd0840faaba0e3a719b07552977ab45eaa6793383a651fcf6794a5