Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ead89a02c944d0c…

MALICIOUS

PDF

73.8 KB Created: 2021-04-04 07:50:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: a49fca9a39d37671b2dc089535bc5e59 SHA-1: a11faa9f541148022f52fef28b7e9315c36d0cc0 SHA-256: 6ead89a02c944d0c03c9393127d4ee73c416c5e1d6c1680950ee113c9d1ecb15
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains embedded URLs that point to suspicious domains, likely intended to host phishing content or further malware. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Qt', suggesting it might be a generated document used to disguise malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/wix?keyword=mysql+boolean+operators PDF link annotation
    • https://cdn.sqhk.co/rolaravez/DQhjIjd/check_guitar_neck_with_straight_edge.pdfIn PDF document text
    • http://idealslimitaly.site/vanimjtzjh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487197/normal_5fefcd8b19668.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489237/normal_600591f99761a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494673/normal_601f1466a4164.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412382/normal_5fd1e7789c0da.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/jihjegi/sodonuvizuribiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372085/normal_60083854aa46c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452624/normal_6007438e3dca8.pdfIn PDF document text
    • http://xusetifawog.mypressonline.com/bavuke.pdfIn PDF document text
    • http://discount50it.pro/85262249642lj2nc.pdfIn PDF document text
    • http://ultra0.space/479105183398nd91.pdfIn PDF document text
    • http://zumepaposakuf.scienceontheweb.net/63108053170.pdfIn PDF document text
    • http://sobakin.space/46332284863jcdt4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://makakanow.onlinewebshop.net/mojidotukegoliruvas.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_off0000e13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13D 5188 bytes
SHA-256: 1077a3ff4fb80494a6cb9770d25bd6161464d45e2ef385c39723cbed62eff08e
font_01_sfnt_off0000f301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF301 11684 bytes
SHA-256: d21a11fa378e09390058bb90be3cd54130b91b96bde3cb478a096649930693a5