Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6878c746d317cae…

MALICIOUS

PDF

77.1 KB Created: 2021-03-12 13:50:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 45a2dbcef083447259782d0618884208 SHA-1: 9f5f69f6702ebc2054164b3b1f4f6156418f4a1b SHA-256: c6878c746d317cae469e9a6fce5ff346e39b3f4c1a25fed58933b7ea4bb36be5
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains a mass of external links, including a suspicious URL that appears to be part of a link farm designed to attract traffic. The presence of these links suggests the document is intended to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/award?keyword=metodos+anticonceptivos+definicion+pdf PDF link annotation
    • https://jixawapideraje.weebly.com/uploads/1/3/3/9/133997308/dewefidero_totimizipit_pamativol.pdfIn PDF document text
    • https://mubasaji.weebly.com/uploads/1/3/4/8/134846322/xukuwaxunol.pdfIn PDF document text
    • http://lakegefufen.scienceontheweb.net/warm_bodies_film_completo_streaming_ita.pdfIn PDF document text
    • https://negozikazaseju.weebly.com/uploads/1/3/4/5/134587396/lomujumalaw.pdfIn PDF document text
    • https://fipogelijemebu.weebly.com/uploads/1/3/1/3/131398193/funesivuw-vafivizuba.pdfIn PDF document text
    • https://rasegopejut.weebly.com/uploads/1/3/4/3/134317160/40ac4d443f8d1.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabudoxuwa/g8tGJgc/jigsaw_puzzles_epic_mod_apk.pdfIn PDF document text
    • https://varepanuror.weebly.com/uploads/1/3/5/3/135394497/7826656.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/hdhcQjf/14043666629.pdfIn PDF document text
    • https://todijedesat.weebly.com/uploads/1/3/4/7/134775475/sutefapinu.pdfIn PDF document text
    • https://cdn.sqhk.co/kekoseni/eigghhg/license_plate_lookup_texas_dmv.pdfIn PDF document text
    • https://bolefusugo.weebly.com/uploads/1/3/4/8/134868203/7098706.pdfIn PDF document text
    • https://gorejirulikem.weebly.com/uploads/1/3/4/7/134738880/e726063d333e2d.pdfIn PDF document text
    • https://cdn.sqhk.co/jomuzetaveni/Jibidhc/grade_10_math_worksheets_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/yqUhcQj/muvezudamowo.pdfIn PDF document text
    • https://jukikekiku.weebly.com/uploads/1/3/1/4/131453151/gipokobami-davanipozewa.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/tafogusegabomu/filamom.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/32425875689.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/60116800496.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/what_is_a_control_apparatus_meaning.pdfIn PDF document text
    • http://xizokenimufewom.atwebpages.com/dungeons_and_dragons_basic_set_1983.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/video_player_all_format_apk_cracked.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/cs221_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/eclipse_rcp_ide.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/bhaiya_tamil_movie_audio_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/samsung_galaxy_s3_aggiornamento_android_5._0.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_off0000f1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B1 5084 bytes
SHA-256: 7360e50eac23324618b855e63f2e78fc30c048ebd6add6aaade4f5f58ba0ef72
font_01_sfnt_off0001032e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032E 10276 bytes
SHA-256: 01541ad264d48ca2979e6a345d93654aaa349a2d9d343d5ce248abad86c107ad

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