Malicious PDF — malware analysis report

Static analysis result for SHA-256 69fb353c8155a9b4…

MALICIOUS

PDF

78.5 KB Created: 2021-09-16 15:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: d66deab378e4ead63e72298439eb4743 SHA-1: 7eae696ca0e9e3ed507db08eb5cf209c6e62e28f SHA-256: 69fb353c8155a9b46e558b36ed454c27272942ca37320d5ff79bd7efde409b90
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, indicating an attempt to redirect users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The presence of embedded JavaScript (T1059.007) and the nature of the file as a document suggest it was likely delivered as a spearphishing attachment (T1566.001).

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://gtselect.fr/ckfinder/userfiles/files/gonebigowegenugomaf.pdf In PDF document text
    • http://kotolantopeni.cz/file/44562002203.pdfIn PDF document text
    • http://gr-chem.com/upload/files/texizujopuronufejoxefi.pdfIn PDF document text
    • https://demircanticaret.com/userfiles/file/9205062430.pdfIn PDF document text
    • http://ck-kutnahora.cz/gais/image/file/serawilepufumux.pdfIn PDF document text
    • http://newworldss.com/uploads/file/72990062747.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613130a7ec19c---75808084049.pdfIn PDF document text
    • https://epgeptech.hu/ckfinder/userfiles/files/81500599601.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/ganev.pdfIn PDF document text
    • http://tehla.eu/userfiles/file/dizemekuzaloxogoti.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed913cf5e1---68994489824.pdfIn PDF document text
    • https://samavetpharm.com/userfiles/files/20036905222.pdfIn PDF document text
    • https://mumegram.com/userfiles/file/11035882831.pdfIn PDF document text
    • https://aymexco.ro/ckfinder/userfiles/files/11639510993.pdfIn PDF document text
    • https://31app.com/userfiles/file/sofojovozifuzarevoxi.pdfIn PDF document text
    • https://www.tulsarad.com/my_content/js/ckfinder/userfiles/files/ginigokufivuka.pdfIn PDF document text
    • http://longarmacademy.net/fckeditor/userfiles/file/97573050614.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/menum.pdfIn PDF document text
    • http://magic-mugs-factory.com/uploadfile/files/67397916941.pdfIn PDF document text
    • https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/76319792260.pdfIn PDF document text
    • http://vsrru.ru/userfiles/file/42807110229.pdfIn PDF document text
    • http://salespate.com/userfiles/file/bawerukukilopan.pdfIn PDF document text
    • http://tieuhocsongphuong.hoaiduc.edu.vn/ckfinder/userfiles/files/4071558644.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=game+pixel+android+offlinePDF 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_off0000c930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC930 19680 bytes
SHA-256: 9b097acb23892a1ffee5c798de2c7e9f482dea9464d8df42e1830453a4564586
font_01_sfnt_off0000fc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC80 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11497 10532 bytes
SHA-256: f9752564679f0e8a696f12a8d95e1989c75d0102dcb52bc5d91720c46a50e3b4

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