Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cce047650e58bcc…

MALICIOUS

PDF

78.9 KB Created: 2020-12-18 00:02:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 0a2a854a4c07d158a8571e451ee269e9 SHA-1: d0747e7c318af14d35c033fac83143dd109a438c SHA-256: 6cce047650e58bcc6b08c33f9f089a36ba45e152cc114449d68bf7929424d4e0
156 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of numerous URLs suggests a redirection-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=saunders+cervical+hometrac+traction+device PDF link annotation
    • https://sixodajumam.weebly.com/uploads/1/3/4/3/134311071/lomixudeduliv.pdfIn PDF document text
    • https://mivoxoxez.weebly.com/uploads/1/3/4/3/134340481/4943789.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/tijisozakure_kifimazufafi.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/jiwevuterijafus-mekuvezagezoj-dalefener.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0f88bd26ff1194f740ef3/t/5fc61efe3485235c8697f308/1606819582329/heavy_rock_guitar_ringtones.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc19ab11452f90b7fea4d21/t/5fc2f7c39d79364840f01be1/1606612932125/starcraft_2_hotkeys.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbba3ea3-8d0f-4cf3-b77f-e8e0cb09ecc6/wezazajapeguvava.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dbf0116eb00e3c4bba69/t/5fcf5a2f05f6f27807584da7/1607424562080/titowikubivivagovedano.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/zanutigeri.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/tivumumazavixev.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5437c88c99b6d37c40ed9/t/5fcc16532fa8bc6bcdd78e7f/1607210582210/16841066792.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/wejogapusaw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc570e5104edf1d779faec4/t/5fc9840d81b71b40858c3885/1607042063137/taraxajomedazej.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/bowflex_manual_exercises.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5eef1972c46e3c96514a/1606377200265/97414485098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/867a3187-2f75-45d1-b2a2-e8ba46dd5ba5/16157322119.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_off0000f91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91A 5340 bytes
SHA-256: 470809a52214da71e5ce0e53cba4cdc75ebb6b0928860a20d0f5800dcb5e0add
font_01_sfnt_off00010b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B21 10328 bytes
SHA-256: 78f2c39a0d59b6dbb4e7846416baec6341f8df0f57847ab49833b7e6bc19c2c1

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