Malicious PDF — malware analysis report

Static analysis result for SHA-256 67a6f7d53efd622e…

MALICIOUS

PDF

83.6 KB Created: 2021-03-18 16:05:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 77600b3918057436437dd5a7bf4a716b SHA-1: 16fb0041fb39d76fc7d0ff061e8609550ccd3b1a SHA-256: 67a6f7d53efd622e20765c6a45a3cee408fbd5e953ca400f300e4a8b7850a808
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 0.9991

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://seumenha.ru/award?keyword=pte+read+aloud+practice+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365639/normal_60401bd8d0c2e.pdfIn PDF document text
    • http://vugaganopofom.mypressonline.com/adobe_pro_9_convert_to_excel.pdfIn PDF document text
    • http://misusazan.iblogger.org/residential_building_construction_steps.pdfIn PDF document text
    • http://jolijivik.scienceontheweb.net/daresol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451021/normal_5fde3cf717079.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426955/normal_60345835d0665.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427526/normal_60111b9d38b0e.pdfIn PDF document text
    • http://lizuzezusad.medianewsonline.com/interior_and_exterior_angles_of_polygons_worksheet_with_answers.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/xazarujokemus/kemaxarakobofomi.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/womamolofubowoxezetozeb.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/16825117629.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/how_to_reset_filter_in_samsung_refrigerator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d5bc173-5afe-459f-a90f-c729073e93cf/braun_coffee_maker_filter.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/attack_on_titan_season_1_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/printable_hidden_pictures_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65cf5150-f577-48d9-9b74-c9884e8118e0/how_to_clean_flavorwave_turbo_oven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fad2287-9130-4eb5-9673-de53d5f97d04/50713693140.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/agni_natchathiram_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/193f0563-0b34-4789-8c0f-948a21c2795e/hp_officejet_6500a_plus_printhead_alignment_failed.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/audiovision_for_video_maker_apk_free.pdfIn PDF document text
    • http://simitilukurisat.rf.gd/how_to_find_number_of_periods_in_compound_interest.pdfIn PDF document text
    • http://vojutomozab.epizy.com/wosixatepivemivujoxisadez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f683ff2b-7921-4199-a827-7b66201de4a4/how_to_draw_fun_stuff_easy.pdfIn PDF document text
    • http://datidogebe.epizy.com/vibipara.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_off00010967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10967 4972 bytes
SHA-256: 41d6b426f96aa919f73241d6fb4fa051e41184dc1eef1a1dafd8da6df2027345
font_01_sfnt_off00011a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A63 11204 bytes
SHA-256: 127b8c52e97376b15ffb2cecbb3e00383823f6e3a7de8ec13a3d8eb8f6e008c4

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