Malicious PDF — malware analysis report

Static analysis result for SHA-256 991e3c8d4a988c9e…

MALICIOUS

PDF

83.8 KB Created: 2021-03-27 14:21:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d60d08571d08962f8d84f9d358125fa8 SHA-1: de9cbb5fb2fc743eef34de5356c1a2a799d5cd49 SHA-256: 991e3c8d4a988c9ef7043c508ad64f37ccbe1f1c76d8e42cfc6a708f59c2bd38
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 0.9998

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://lozipotod.ru/123?utm_term=citroen+c4+coupe+2005+manual PDF link annotation
    • http://discout.online/what_do_i_feed_a_green_tree_frogb9ttt.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/how_to_use_logitech_wireless_keyboard_k400.pdfIn PDF document text
    • http://crubr.space/92102828797fa0ow.pdfIn PDF document text
    • http://wapadax.scienceontheweb.net/ankle_mobility_exercises.pdfIn PDF document text
    • http://buwovavozu.getenjoyment.net/sex_and_the_city_2_trailer_song.pdfIn PDF document text
    • http://luwogexejel.getenjoyment.net/how_to_make_chicken_jerky_with_dehydrator.pdfIn PDF document text
    • https://moredotaze.weebly.com/uploads/1/3/0/7/130776260/5533292.pdfIn PDF document text
    • https://foxejakepi.weebly.com/uploads/1/3/0/8/130874264/5646999.pdfIn PDF document text
    • http://nomenowunesazoz.scienceontheweb.net/vepotuxu.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/sojenozap/talk_to_me_in_korean_podcast_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/29468877200.pdfIn PDF document text
    • https://bad3f395-1638-4667-b349-d6f934eeab49.filesusr.com/ugd/ed2d23_acaf2377e97648339e5284a138d147e0.pdf?index=trueIn PDF document text
    • http://lawaxisagiwog.atwebpages.com/bisubasixadaxisogurazi.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/chamara_ranawaka_music.pdfIn PDF document text
    • https://90ff81fc-98d9-4e53-96a3-aaa5c1c2042e.filesusr.com/ugd/bb5aff_da5887478e3b4ee1b8a2a68004e5763a.pdf?index=trueIn PDF document text
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_be4751785c164d3597db78f686aa5758.pdf?index=trueIn PDF document text
    • http://baxewape.myartsonline.com/how_to_open_java_swing_project_in_eclipse.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/kendo_ui_angular_cell_template.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_off000106b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B6 5292 bytes
SHA-256: 2633f5eb2dab5d32fd2033a2048b9dfe72c6e30ada74c7ed69403287ae8c341f
font_01_sfnt_off000118aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118AA 12356 bytes
SHA-256: 38a6b45ca182162367c8807d75a9cd5fd4a59af3404c219b78d4cf3a4e125702

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