Malicious PDF — malware analysis report

Static analysis result for SHA-256 183452f52571a0e0…

MALICIOUS

PDF

72.0 KB Created: 2021-09-28 11:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b664255688719ad3f963c1b97b4810a9 SHA-1: 05215d814f074631f56d6dc0bc1401a2da2ec5d2 SHA-256: 183452f52571a0e0f7b67f019dfd9625972c38a6f3af02b062e5dbf2b18031ae
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to disposable domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://pixomot.ru/uplcv?utm_term=singham+punjabi+full+movie+parmish+verma+watch+online PDF link annotation
    • https://cochleartudaskozpont.hu/files/42523755354.pdfIn PDF document text
    • http://sperrincaravans.com/images/file/riburidomebuv.pdfIn PDF document text
    • http://markasib.ru/ckfinder/userfiles/files/65748073806.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ef466e7445---fowotedowawi.pdfIn PDF document text
    • http://phonphangschool.com/upload/files/69220476169.pdfIn PDF document text
    • https://lifeteacher.tw/uploads/files/202109071318069973.pdfIn PDF document text
    • http://aviatechinform.ru/sadm_files/pesulaferomodudabiser.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1614da8b42d902---54696085849.pdfIn PDF document text
    • http://www.web-globus.de/ckfinder/userfiles/files/29596611675.pdfIn PDF document text
    • http://machi-tomo.xyz/js/ckfinder/userfiles/files/xogex.pdfIn PDF document text
    • http://jdjcnc.com/upfolder/e/files/20210922154518.pdfIn PDF document text
    • http://szcftz.com/upload/desodasow.pdfIn PDF document text
    • http://xinghui.co/upload/ckimg/files/202109090557009857.pdfIn PDF document text
    • http://www.tivafa.hu/upload/file/xozusasoraxidugavabikim.pdfIn PDF document text
    • http://georgewongdesign.com/gwd/upload/files/kazodiluxukuxejepux.pdfIn PDF document text
    • http://metabolitplus.ru/files/file/65046578271.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/witemipaximokorux.pdfIn PDF document text
    • https://noitiethoc.com/userfiles/file/31023802768.pdfIn PDF document text
    • http://abbwingslynnhaven.com/uploads/files/ginidupimixinasenupenu.pdfIn PDF document text
    • http://gyliver.ru/files/files/larekewefele.pdfIn PDF document text
    • https://elmawadah.com/userfiles/file/lesovunupadupajasobi.pdfIn PDF document text
    • https://nazrabilisim.com/calisma2/files/uploads/14808355116.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_off0000b2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC8 17184 bytes
SHA-256: 2b2fc964b4c5009d7506a01aeabfa61fe7d52cd5b75cde91967ed837b9cf30a4
font_02_sfnt_off0000f6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BE 11524 bytes
SHA-256: 431921673fd882fb62a6acda2d9ac52f0127a0a7ee5e2ad13529ff06e6e6e06a

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