Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1d073836c61372a…

MALICIOUS

PDF

159.2 KB Created: 2021-02-16 02:09:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: a0420e0495f22b25fb8b07fabbec55de SHA-1: fed98237317cbf3d49c18891c6eba66536f4cfe4 SHA-256: c1d073836c61372a74bd0dd596d1ebbd42be48421078caee3ec5345e369a531c
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, indicating a phishing or trojan payload. It contains an embedded URL that leads to a suspicious domain, likely intended to host or redirect to malicious content. The document body, though heavily obfuscated, appears to reference an ESPN schedule, suggesting a social engineering lure.

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://maypoin.ru/strik?utm_term=espn+30+for+30+upcoming+schedule+2021 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387052/normal_5fc6453421942.pdfIn PDF document text
    • https://cdn.sqhk.co/tinodifozeza/ijSjh6Q/8790453529.pdfIn PDF document text
    • http://mutinujevax.22web.org/sample_blood_test_report_for_dengue.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448110/normal_5fe4c419053b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455387/normal_5ffde0fe30d45.pdfIn PDF document text
    • https://cdn.sqhk.co/goganededem/lCLifUH/85979378540.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408588/normal_5fc6986721b91.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/jdgjjjx/electronic_music_genres_by_bpm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369512/normal_6014a4ed4fb3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464702/normal_5ffd3c4868b33.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://joxaralabodegad.rf.gd/madurai_kamaraj_university_phd_guide_list.pdfIn PDF document text
    • http://satosawinesuf.rf.gd/monthly_budget_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/vcds_12._12_3.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/20086687439.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/javascript_ajax_file.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/cartosat_1_data.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/zawamevobipuferiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/gojif.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_off000230a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x230A5 5808 bytes
SHA-256: 4a395c913027127aa2f42c2c559b456ce2ce5c13cb760f87008930ac9ac79624
font_01_sfnt_off00024451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24451 13464 bytes
SHA-256: 814b6d311d4a71f3e6319faad8321df5508d144b17fa19a261ab8da042f50bdc

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