Malicious PDF — malware analysis report

Static analysis result for SHA-256 e99058a893356554…

MALICIOUS

PDF

67.8 KB Created: 2021-02-23 18:48:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6b1211d7dcb3c369b8df0954c60b9553 SHA-1: cc9f6fec9c6da50985bf64ec7537287d8b4a7767 SHA-256: e99058a893356554ffced948455e1a434f4291df8d8db3dea8f8582985c567b6
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or social engineering scheme. The document body, though heavily obfuscated, appears to contain keywords related to the embedded URL, suggesting an attempt to trick the user into clicking the link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=worthington+kilbourne+football+tickets PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380411/normal_5fdd11246f7c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417123/normal_5fff799deb8a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412154/normal_6035222ab8783.pdfIn PDF document text
    • http://gelchlen.fun/achyutam_keshavam_ringtonepl0yc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447663/normal_5fd67d1d5483f.pdfIn PDF document text
    • http://evromotors.net/marks_and_spencer_christmas_food_order_formcg173.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500878/normal_600276c836dc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423145/normal_6025e86d2d1c7.pdfIn PDF document text
    • http://mail-autoscout24.net/2356625923197gcy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449395/normal_6001daf1772ab.pdfIn PDF document text
    • http://otshelnik.net/batejox3bo18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477863/normal_5ff44db478650.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421768/normal_5ff656a084bff.pdfIn PDF document text
    • http://gonimuliveza.22web.org/boat_trailer_registration_transfer_form.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bimumebuzof.epizy.com/somigutabe.pdfIn PDF document text
    • http://koselogajigikev.epizy.com/pixedi.pdfIn PDF document text
    • http://jodojan.epizy.com/bts_v_scenery.pdfIn PDF document text
    • http://molutuganum.epizy.com/rumufe.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_off0000cc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0D 5360 bytes
SHA-256: f6f8e16ed84de75017fa94e4bf970021c418065b2dd42befcc19e2c55d9b7a8e
font_01_sfnt_off0000de58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE58 10400 bytes
SHA-256: 227eb2fed3812181a09b98c564d4b533d3fc33e0ac94298d33f93b531d649678

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