Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db85d3dab6ee125…

MALICIOUS

PDF

71.5 KB Created: 2021-02-28 00:23:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c4084295332b3e3234cddbda4df30776 SHA-1: b0aeb475cf6352a975f4832605636518c1719f7e SHA-256: 6db85d3dab6ee1257ec9c26c62f8286b5d319af9e3f7bcea33be18c351e497ee
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/award?keyword=can+you+use+a+financial+calculator+on+the+cfa+exam PDF link annotation
    • http://webpost.pro/voyager_legend_cs_headsetsfz1e.pdfIn PDF document text
    • https://cdn.sqhk.co/zegetaru/xiggqgf/mezebagazifa.pdfIn PDF document text
    • http://vegemisabuxum.22web.org/tebizibejewi.pdfIn PDF document text
    • https://pigaxapi.weebly.com/uploads/1/3/2/8/132815084/xanuzu-kirujijenimi-kunuzupajukuluz-wuxozud.pdfIn PDF document text
    • http://chambrely.xyz/90888372018cn98q.pdfIn PDF document text
    • http://nefritthebestthing.site/49015886586nmurp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tosodesuvivat.epizy.com/sewag.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/jekojaxorufiworuzumujifez.pdfIn PDF document text
    • http://xafonabikox.rf.gd/22128234591.pdfIn PDF document text
    • http://vumevesivitun.epizy.com/dshs_caregiver_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/26076203379.pdfIn PDF document text
    • http://dadodoserosif.epizy.com/annabac_2_physics.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC22 5196 bytes
SHA-256: 09142baf23eea44b67df0f8bbf970321258da2f0ce8549002d191fda7962bb3f
font_01_sfnt_off0000edb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB1 10344 bytes
SHA-256: f44c6e49182897d1db398422d590f1f1ca1f1c4fccef84def963112fc24d9e04