Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf9f27c04b387e48…

MALICIOUS

PDF

74.9 KB Created: 2021-03-28 22:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a38388406ed76e3efb2cffcf308ab785 SHA-1: a55e57b91f0a362d288e63e7b67f573ca999f2ad SHA-256: cf9f27c04b387e482d48bcab413416d3324849966b7b1c9ba0537e5e9fa7a27a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://druttle.ru/award?keyword=finger+type+slug+catcher+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388613/normal_60018e1877d9b.pdfIn PDF document text
    • https://cdn.sqhk.co/zobelekivix/cyYo5Qf/venomugatopekarobazad.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/jiM2igJ/trivia_crack_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/jijcjdo/shelter_island_san_diego_hotels_best_western.pdfIn PDF document text
    • http://vaxiliwu.medianewsonline.com/hernia_umbilical_en_neonatos.pdfIn PDF document text
    • https://cdn.sqhk.co/nobukomorur/OXgfuhu/maxagizofodezulogifinuze.pdfIn PDF document text
    • https://cdn.sqhk.co/sesexibanobu/cUAEidz/78302700043.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489596/normal_603c10caa7eb0.pdfIn PDF document text
    • https://cdn.sqhk.co/bawivurolut/lC3pglp/39444328945.pdfIn PDF document text
    • https://cdn.sqhk.co/dikapagoloza/m0hfI3g/36149143628.pdfIn PDF document text
    • https://cdn.sqhk.co/woxemumi/dOQidhg/idle_ants_2_save_editor.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/hfjeCHM/kabubevigiw.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/gghhmjf/82616266343.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/TifHcoX/miniature_golf_courses_in_austin_texas.pdfIn PDF document text
    • https://cdn.sqhk.co/gusiloxi/haUjgph/piano_man_chromatic_harmonica_tab.pdfIn PDF document text
    • https://cdn.sqhk.co/bilanogakiw/ezuJjd7/90415742849.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401518/normal_5fcc0a318af02.pdfIn PDF document text
    • http://xorimomupajo.scienceontheweb.net/changing_back_to_word_document.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://radiviwix.onlinewebshop.net/snowy_owl_aarakocra.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_off0000e6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A0 5472 bytes
SHA-256: 02953a97cbadff81a1db0f27646774efc7c66a32f416ef4226d358d38eb001bb
font_01_sfnt_off0000f94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 11060 bytes
SHA-256: c4c2aca6b7b4bb114e8dc0bad74587584bdfe2dad761eacd336ea222d92626d3

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