Malicious PDF — malware analysis report

Static analysis result for SHA-256 f130de186fa6dae2…

MALICIOUS

PDF

89.0 KB Created: 2021-09-18 22:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 1eb0b17bd5393b301786986d7af75084 SHA-1: 10a613ef5490d6eb00dc3996c6951b158ac2b3de SHA-256: f130de186fa6dae2522887a77dce5510e5914f8c5cb4f949c4a87b319655c1fb
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting it's designed to redirect users to potentially harmful sites. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://huntic.ru/uplcv?utm_term=avengers+infinity+war+watch+full+movie PDF link annotation
    • https://gulf-rope.com/images/bulk_images/files/43584902537.pdfIn PDF document text
    • http://elite-nails.pl/Upload/file/lobamokuxuvekamafiser.pdfIn PDF document text
    • http://rungrawin-itt.com/userfiles/files/dikenagulapenubivugotos.pdfIn PDF document text
    • https://volgogradexpo.ru/ckfinder/userfiles/files/25741680579.pdfIn PDF document text
    • https://www.educazionesessuale-scuola.ch/ck/ckfinder/userfiles/files/bivamawij.pdfIn PDF document text
    • https://thediamangroup.com/_images/files/29748386850.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/vosujifo.pdfIn PDF document text
    • https://isosklo.cz/uploads/ruwiferupawedimifi.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/33449369922.pdfIn PDF document text
    • http://studiodispirito.it/userfiles/file/demerosorexivujarofeda.pdfIn PDF document text
    • https://funke.be/data/file/gowopigosifivekenaba.pdfIn PDF document text
    • http://xn----7sbakn3aoflleitf3m6a.xn--p1ai/userfiles/file/fawuneru.pdfIn PDF document text
    • http://songhakbbq.com/uploads/files/32226148923.pdfIn PDF document text
    • http://kroonzuivel.nl/ckfinder/userfiles/files/50822070956.pdfIn PDF document text
    • http://retailcop.ca/files/katukigagabipome.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/geninuzewejiwavobafim.pdfIn PDF document text
    • http://thelonerangerfanclub.com/ckfinder/userfiles/files/tolevexajigixeteto.pdfIn PDF document text
    • https://path.mn/userfiles/files/sipusololilaguwexefirej.pdfIn PDF document text
    • http://myshiou.com/uploads/files/202109151841413721.pdfIn PDF document text
    • http://parfumerieindex.nl/images/uploads/siwumilakesupiwil.pdfIn PDF document text
    • http://marleenjansen.nl/images/uploadfiles/46235303498.pdfIn PDF document text
    • http://lg-palette.com/upload/files/fibesafofime.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://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_off0000f760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF760 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F72 17520 bytes
SHA-256: 19305e3803cfbb795b9d5a18bc2447efe3cc64ec502ddd747a1f14eceb18aa31
font_02_sfnt_off00013c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C76 11128 bytes
SHA-256: fbdb0dfb3bbb4462f1829ecd8ded518779fde825867d4f7aaf111e3c2bf6406c

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