Malicious PDF — malware analysis report

Static analysis result for SHA-256 5af509b955d45ad5…

MALICIOUS

PDF

74.5 KB Created: 2021-03-03 06:11:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 8c872c3d5cb9b004cfa50485777f0ce0 SHA-1: ff1239a91733d6eabd85909de1506f1811e69a68 SHA-256: 5af509b955d45ad55b7539001097f3954d1d20b826698314448c4d759bba8d07
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'soxebez.ru', which is likely used to deliver a secondary payload. The presence of a 'download button' heuristic further supports the phishing lure attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/wix?keyword=bike+race+apk+mod+2018 PDF link annotation
    • https://cdn.sqhk.co/soxuwutitaw/hahagdy/83278341410.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/jigozopo.pdfIn PDF document text
    • http://pusokum.66ghz.com/gloria_victis_archer_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/rubalibuzodi/bhjGhhi/52221884947.pdfIn PDF document text
    • http://xoxosedefoxadu.mygamesonline.org/qu_significa_la_palabra_destruir_en_la_biblia.pdfIn PDF document text
    • http://mafebeb.22web.org/fuzedobewe.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/nosepevozux/pijalifefubozarep.pdfIn PDF document text
    • http://melewurimepuja.rf.gd/pomapiwazawema.pdfIn PDF document text
    • http://kisalonokexiwi.atwebpages.com/60223456769.pdfIn PDF document text
    • http://vabagez.rf.gd/moxumutidupajebixew.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/81362076090.pdfIn PDF document text
    • http://fovadodal.rf.gd/ruruwerifibofar.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/cima_certificate_level_past_papers_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/simple_flyer_design_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/fisher_paykel_top_load_dryer_not_heating.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/camera_video_call_app.pdfIn PDF document text
    • http://pasazaxara.rf.gd/ps3_emulator_apk_mobile9.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/57771828196.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/7135023878.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/wubobudoni.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/wololefonixipagexidipigan.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_off0000e6aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AA 5640 bytes
SHA-256: 5d1f0d89bf3129460a1b58eeeb0824e93bd97c8caf2bbef8484e37d0f0ba9c6a
font_01_sfnt_off0000f9cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CC 10184 bytes
SHA-256: a0faf81d85c3519f14c0fa11df66f5bd712c81b057ed963acf9bb14b23e48ffc

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