Malicious PDF — malware analysis report

Static analysis result for SHA-256 952415cd2bd090ab…

MALICIOUS

PDF

73.7 KB Created: 2021-05-13 02:14:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2ed8c4bb6d8b496a4b986e7a12458e0 SHA-1: 9ecf4ffcd8532b78413b6d8e9cdbfbb49be1876f SHA-256: 952415cd2bd090ab6ea2d4cb29f6ec8ac8311132e4672e7a216054b6b1b44484
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as 'Pdf.Phishing.Trojan'. It contains an embedded URI pointing to 'https://zajinet.ru/strik?utm_term=do+it+yourself+paint+by+numbers', which is likely part of a phishing or social engineering attempt. The document body, though heavily obfuscated, suggests a lure related to 'Do it yourself paint by numbers'. No scripts were extracted, but the presence of an external URI and the phishing classification strongly indicate a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/strik?utm_term=do+it+yourself+paint+by+numbers
    • http://jumuzonogajal.iblogger.org/aeroflot_app_apk.pdf
    • https://dowawanezezezo.weebly.com/uploads/1/3/1/0/131070762/4e1c7e6279c914.pdf
    • http://triple-doska6.club/2817853983707hpo.pdf
    • https://jiwebatije.weebly.com/uploads/1/3/3/9/133997557/joxoxan_gegasebotu.pdf
    • http://insurancesouk.com/77090796289nz0z1.pdf
    • http://prizinsta.site/michaels_memorial_day_hours97dcn.pdf
    • http://cozyplacefor.rest/fukivumiwal08ix0.pdf
    • http://ditulut.iblogger.org/sagumatijokul.pdf
    • http://zimegubavij.22web.org/academic_vocabulary_list_with_definitions.pdf
    • http://roskycnmx.com/war_of_the_worlds_summary_book_2p3g9b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bapujuta.epizy.com/20089482963.pdf
    • http://leludopovofa.rf.gd/grim_world_gameplay.pdf
    • https://s3.amazonaws.com/tufitijinexu/fopoluloledaperewugedum.pdf
    • http://popiforakaweder.rf.gd/favomalusixukesa.pdf
    • https://s3.amazonaws.com/jajuzasalikirut/what_is_an_old_norse_poem_called.pdf
    • http://xodojes.epizy.com/16069756726.pdf
    • https://s3.amazonaws.com/mefovu/79410776218.pdf
    • http://lisodibediv.epizy.com/97697230943.pdf
    • https://s3.amazonaws.com/dotivaf/95763334581.pdf
    • http://fowuxolizafiful.epizy.com/carnegie_learning_algebra_1_answer_key.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e252.bin
4ff6368ae354012adf59b989a87010785e7fa9e564bd5254e65393047636054c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE252 5288 bytes
font_01_sfnt_off0000f443.bin
c3801ca17911c965fd98d89f3282460679c0cc0114e7de9ad6b20a31f5eb4556		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF443 10972 bytes

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