Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b124b92a9f26040…

MALICIOUS

PDF

88.6 KB Created: 2021-09-13 21:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 64cc3ccdc1930326ee7513d1963db73a SHA-1: 4bd1cbf43e16106c9c65066ee54f980293667e1e SHA-256: 0b124b92a9f26040d48ace2cf6be05083434e75836c6d0232bd9a9f9c288abc6
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, with a high ML classifier score and ClamAV detection indicating malicious intent. The presence of embedded JavaScript suggests an attempt to execute code within the PDF viewer, likely to redirect the user to malicious sites like 'https://allytemp.ru/uplcv?utm_term=watch+monster+hunter+online+movie' for phishing or further exploitation. The PDF is also identified as a link farm on disposable hosting, reinforcing its role in a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://allytemp.ru/uplcv?utm_term=watch+monster+hunter+online+movie PDF link annotation
    • https://vpmemorial.net/images/file/kosovib.pdfIn PDF document text
    • https://ksmt.edu.np/assets/ckfinder/userfiles/files/nafivevagexol.pdfIn PDF document text
    • http://canyonmeadows.org/userimages/palumagidubupanozij.pdfIn PDF document text
    • http://gdfsztal.com/uploadfile/files/56311326328.pdfIn PDF document text
    • http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/88286704030.pdfIn PDF document text
    • http://ablerexthailand.com/userfiles/files/taxikemepitopajudabaxivux.pdfIn PDF document text
    • http://savitaco.com/uploads/images/files/jojevotud.pdfIn PDF document text
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/13467310080.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/gomebogusijibegumuvewaza.pdfIn PDF document text
    • http://www.darvidproperty.com/news/file/bulapivugutekawevedirani.pdfIn PDF document text
    • http://tjchenxing.com/filespath/files/20210904162026.pdfIn PDF document text
    • http://laconchigliacasevacanze.it/userfiles/files/kijugegekob.pdfIn PDF document text
    • http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/lusobezifukudejixunenuw.pdfIn PDF document text
    • http://abw10thstreetne.com/uploads/files/zilezusolagevezufum.pdfIn PDF document text
    • https://jatransfer.com/userfiles/file/80918420475.pdfIn PDF document text
    • http://garant-fond.ru/ckeditor/ckfinder/userfiles/Images/files/62349938864.pdfIn PDF document text
    • http://coconut.hu/userfiles/file/dujujafud.pdfIn PDF document text
    • https://keralahappyjourney.com/ckfinder/userfiles/files/15821185591.pdfIn PDF document text
    • http://jd6618.com/jd6618/file/2021-9/file/LwpCms2021_09_03_08_34_07_5977.pdfIn PDF document text
    • https://network-italia.it/file/ramipagiva.pdfIn PDF document text
    • http://lerucherdesanges.fr/userfiles/file/78635714293.pdfIn PDF document text
    • https://tolgyesvolgy.hu/userfiles/file/34073568405.pdfIn PDF document text
    • https://ferropula.hr/files/vagitexemugukejujewif.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_off0000f719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF719 10652 bytes
SHA-256: f0315018e983f612b94d116844cf5940f7018127717e286766f91a284cd26617
font_01_sfnt_off00010f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F51 17596 bytes
SHA-256: ea0b01dbb58c14555e2748631743dd48112a24fb287edaa560d2d0a61bef0b8e
font_02_sfnt_off00013c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C80 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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