Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ade6d2b2ea973a9…

MALICIOUS

PDF

75.4 KB Created: 2021-02-17 16:36:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ccd492ff80eaea0703be227df36b1b3a SHA-1: a418a2867388eb0eab4ef91387551a6f8cbcfd1d SHA-256: 6ade6d2b2ea973a98e4e98ae4df1422efad64c64d35f52b178b23b3b37ba43f8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded external URI pointing to 'baarspo.ru', which is likely used to host a malicious payload or phishing content. The PDF structure itself appears to be a lure, with the document body containing garbled text and metadata suggesting it was generated by wkhtmltopdf, not a typical document authoring tool.

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://baarspo.ru/strik?utm_term=easy+high+protein+low+carb+vegetarian+meals PDF link annotation
    • https://cdn.sqhk.co/xazewizol/uOnljjl/music_equalizer_bars_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wujamufaw/hjBgd4s/vaxuwupizuditijetazevuz.pdfIn PDF document text
    • https://cdn.sqhk.co/nemuvefik/o8Fgjhb/goloz.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/eieuxil/daruzigewuwopefaperigo.pdfIn PDF document text
    • https://cdn.sqhk.co/pininipata/0Xp4je3/badevomolobededoful.pdfIn PDF document text
    • https://cdn.sqhk.co/zaborofisi/jRhaEgc/senebi.pdfIn PDF document text
    • http://lerob.info/colorado_mental_health_jurisprudence_exam_answersximnd.pdfIn PDF document text
    • https://cdn.sqhk.co/retepisej/7mH8him/54792013933.pdfIn PDF document text
    • http://medefoduma.iblogger.org/wijiletafezupudipem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pimifemegizak.epizy.com/jufoputekuwaribikek.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/10762087572.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/regamudipebofol.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/legasijasurobakowikid.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_off0000e9e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E0 5696 bytes
SHA-256: 93dee89001157146b36dfb895176d808670f2f1d15b0c6e48884f629ceed9b73
font_01_sfnt_off0000fd3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3B 10296 bytes
SHA-256: 53b29454e5588bd396d85d0202ad4632afbcd6d69b04e9a6b7eaad15c2e91639