Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7a272115bd4d285…

MALICIOUS

PDF

92.5 KB Created: 2021-03-22 10:35:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b3fcfd95ef1dc33efc469593d1f14a4d SHA-1: 85f1cdd1516eefaf09e5f72760b71284c821c577 SHA-256: f7a272115bd4d2854ba7066e6f2f68e4812d0bad7839ace9fd999cd1178bcf13
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. An external URI pointing to 'xezojetit.ru' was extracted, suggesting the document's purpose is to redirect users to a potentially harmful site. The document body appears to be obfuscated or corrupted, but the presence of the malicious URL and the overall detection score strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xezojetit.ru/award?keyword=bulfinch+s+greek+and+roman+mythology+pdf PDF link annotation
    • https://cdn.sqhk.co/litalile/mihhaZi/minecraft_bendy_mod_apk_v1._16._1._02.pdfIn PDF document text
    • https://cdn.sqhk.co/guzelatolina/c9VloSq/us_police_robot_transform_truck.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/iQiinAj/9_months_from_today.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/2TyBjcv/marshmello_alone_1_hour_8d.pdfIn PDF document text
    • http://sibuvre.com/18911347212e4x7x.pdfIn PDF document text
    • http://aycotoro7.xyz/lazuwowovapukmatug.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/CIjhzie/dallas_stars_nhl_team.pdfIn PDF document text
    • http://stavki-na-sport.site/kevebadadaw6smqd.pdfIn PDF document text
    • http://instahelpforbusiness.com/52791763961p1y5h.pdfIn PDF document text
    • http://jakor.pro/noam_chomsky_major_contributions_to_psychologygybsi.pdfIn PDF document text
    • http://edaruzal.xyz/605_freeway_south_traffic_reportubzvb.pdfIn PDF document text
    • https://cdn.sqhk.co/ruperodu/5eiiibl/biripixetu.pdfIn PDF document text
    • http://forexgeeks.net/tupovuzqvxzx.pdfIn PDF document text
    • https://cdn.sqhk.co/fezivabuja/4rCTMjj/dj_marshmello_birthday_cake.pdfIn PDF document text
    • https://cdn.sqhk.co/zipirevofu/jiijgjb/lebara_mobile_internet_balance_check_code.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fedure/68748819284.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/vekamekowunepor.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/present_perfect_tense_worksheet_for_class_8.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/katelerer.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/siwipejefidabepugef.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/22_gauge_aluminum_sheet_metal.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/bipesepotuzob.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/how_to_set_up_a_7.1_surround_sound_system.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F54 5668 bytes
SHA-256: 772e371b47634260b2ab19f48d6b28f5f4a1c9706d0a6930d61b0c4f2e79ace8
font_01_sfnt_off00013277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13277 10640 bytes
SHA-256: be5be37e22a0f4d1a2c6afe922b6fd3424496c2527167c91f816912e2e2a5292
font_02_sfnt_off00015678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15678 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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