Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a6a7c68bab77c61…

MALICIOUS

PDF

83.3 KB Created: 2021-02-16 10:22:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a91c1f91918f02dcb9beed7234f4b331 SHA-1: aaca5aadba74899e52b7c850bd2dfa55829da4f4 SHA-256: 8a6a7c68bab77c61fdf8c347a3e5bbe45b35c303050a39775a2e93a338f69a2a
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/aws?utm_term=uppababy+2019+vista+%252B+mesa+travel+system+-+bryce PDF link annotation
    • http://rebelliona.online/vclav_havel_audiencet9rbr.pdfIn PDF document text
    • https://cdn.sqhk.co/dimowitop/jzggjhz/vumimemipixubojaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/nizekidido/gijdicZ/how_to_draw_anime_hair_girl_short.pdfIn PDF document text
    • https://cdn.sqhk.co/devepogisog/ijiUido/carsim_m5_c63.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/jdBgcic/53597315924.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/5HJhhU1/rulafivivivesidunopumibuz.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/hjhVgdH/reposteria_dominicana_near_me.pdfIn PDF document text
    • http://vertigoa.online/installation_wireless-n_wifi_repeater_deutschpxvuq.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/pugomonapoxuxe/magusuzuzuxijumomu.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/wolakinilomoninoxatogu.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/que_es_un_proverbio_chino_en_ingles.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_off0001069e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1069E 5884 bytes
SHA-256: 532053cfba0cca369e804c9d0d83100a482991e7163ef8d80f2e78cbcc0b1f3e
font_01_sfnt_off00011aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA5 11016 bytes
SHA-256: 9b30b7d9c4fc9c1043bb15a9d0c2e5bda71c466b52029a29745e4d9c6375a54d

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