Malicious PDF — malware analysis report

Static analysis result for SHA-256 46985c054c3818e7…

MALICIOUS

PDF

75.8 KB Created: 2020-11-18 12:55:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7effe1448947a39c89e4de4dcf269f48 SHA-1: dcc6fa7388163dcc10c0800b8e1f027759af741d SHA-256: 46985c054c3818e754cf6d2fe539c3677a3eab001339c838f63bf87c59be56f3
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 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://traffking.ru/strik?utm_term=american+kenpo+karate+yellow+belt+te PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409998/normal_5f9e64ee3a91f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5fac213d2abfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420917/normal_5f96673067293.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471250/normal_5fa66e13a88b8.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/busixakowun_zefisuni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5fa6da4182ff5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wegugus/1997_gsxr_750_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vopadofugon/buck_i_care_about_consent.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/xuxidalofe.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/danza_caracteristica.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE098 2976 bytes
SHA-256: 67d2157d4f86ea6439db37db21b2c711f907de28628c8b197c4b0db8621511b4
font_01_sfnt_off0000eb3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3D 5288 bytes
SHA-256: 4ec6c811680bf7b0bc93960f3c210164332e12d23020cbf490f70cac2e4dcbcb
font_02_sfnt_off0000fd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3C 10676 bytes
SHA-256: 9dd1957a68d5a5fe1ed98ddd06d3f1d7a2db39316d14da9ff8ca88461b198a76