Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba75ad835f65095c…

MALICIOUS

PDF

72.4 KB Created: 2021-09-18 01:00:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 94009b52b0cfbd0b7eccf5d7901429bc SHA-1: efc8dc9f87c592b60643197cfa8a790d7f0c298c SHA-256: ba75ad835f65095c10931d51fc3fbfa680fbbe890a7b024a7b3e41e2f5d98471
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to potentially malicious domains, and is identified as a link farm. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a tactic to obscure malicious links within a large number of redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/512d4e68b9c0ae0819f98937fb533104/samovigilozizagonujipaxi.pdf In PDF document text
    • https://alihuata.com/userfiles/file/70665525504.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/lifijata.pdfIn PDF document text
    • http://autoscuolapezzano.it/userfiles/files/jekate.pdfIn PDF document text
    • https://www.sudoku-cool.com/ckfinder/userfiles/files/32717203119.pdfIn PDF document text
    • http://artgraf24.pl/userfiles/file/30867823878.pdfIn PDF document text
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/95681054600.pdfIn PDF document text
    • https://hobbypet.cz/files/file/83509338558.pdfIn PDF document text
    • http://siamsankyo.com/Uploads/file/gobuliwepogesetexobak.pdfIn PDF document text
    • http://kkagro.com/media/images/upload/file/70139938412.pdfIn PDF document text
    • https://suativisamsungtaihanoi.net/upload/files/juxawamaxuxixe.pdfIn PDF document text
    • http://www.rannatennis.ee/data/upfiles/files/92981479877.pdfIn PDF document text
    • http://www.ettermanenterprises.com/ckfinder/userfiles/files/gutidamez.pdfIn PDF document text
    • http://huucodatlanh.com/userfiles/file/levarogubapupuvamezim.pdfIn PDF document text
    • http://kemnhapkhau.com/upload/files/deriwos.pdfIn PDF document text
    • https://zlato-invest.cz/upload/files/18915601413.pdfIn PDF document text
    • http://wenyanchem.com/upload/files/82327505772.pdfIn PDF document text
    • http://mayinmaunhat.com/upload/files/15531160864.pdfIn PDF document text
    • https://vivekanandbawwa.com/userfiles/file/zimodudunen.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16142e81d22295---jujuxe.pdfIn PDF document text
    • https://jairdefreitas.com/ckfinder/userfiles/files/lipovuxeraputopezitevudol.pdfIn PDF document text
    • https://dimensionshoppe.com/alpha/ckfinder/userfiles/files/37760215342.pdfIn PDF document text
    • https://viettrungson.com/media/Files/65662173073.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=android+zhuyin+imePDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB76F 17700 bytes
SHA-256: b9637512c63bb69008133cf88ce11d99445bda073a943a31f0e9994ae1b74a50
font_01_sfnt_off0000e4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FC 10296 bytes
SHA-256: 0f172c924a6b9ee347b9571cccc86c6206d9575125b631325bdc476efa91853f
font_02_sfnt_off0000fbf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.