Malicious PDF — malware analysis report

Static analysis result for SHA-256 227972b9e9f1b78e…

MALICIOUS

PDF

79.6 KB Created: 2020-12-25 03:46:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0c82528a9c8ec348baccf586dc28e704 SHA-1: 2d443ee90d308bbd189d07e9238f39aa0032b6f9 SHA-256: 227972b9e9f1b78e48ca4b19c657d83e41641e5bfd5f92d350d9743ecf4496f7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing campaign. The ClamAV detection and ML classifier also indicate malicious intent. The embedded URLs are likely used to redirect users to malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/strik?utm_term=download+police+car+vs+gangster+escape PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487663/normal_5fb4d973df154.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/punafejolujediguvev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404502/normal_5fe5117c6976c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388813/normal_5fc57062ccd06.pdfIn PDF document text
    • https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/wuforer-zibamolojafag-goxirurugewazox.pdfIn PDF document text
    • https://lexawuvake.weebly.com/uploads/1/3/4/6/134610488/voxazatikidemilu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424331/normal_5f9dd5151158a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530429/normal_5fd646786ff67.pdfIn PDF document text
    • https://xonujofepip.weebly.com/uploads/1/3/4/3/134385468/fubosiwogag_nuvelonivud_lejew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444123/normal_5f9f046b98be2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/643250ce-d363-4b3d-8db4-a13bd8a23cb8/dinatajofumusev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82330a91-c901-4972-8cf6-551e43c62a50/wawewemero.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://scripts.sil.org/OFLIn 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_off0000e5df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DF 5392 bytes
SHA-256: 84a07c21dc6ad7e32240f2d594543b205c8e055de8aae1dcea723ea73eb38ba8
font_01_sfnt_off0000f862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF862 10452 bytes
SHA-256: 1228422cf48827b727ac2c6e1957569b18598d3b37caab9b7f20dbf503a66895
font_02_sfnt_off00011c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C70 16060 bytes
SHA-256: 9fce2e558c7eba93e9b4ba87b790c422cf9490aab73fe875614431ac3e7f116a

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