Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ccbe2c41a59e98a…

MALICIOUS

PDF

70.0 KB Created: 2021-04-13 05:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bcfbfb5f26970a6a2813f328f3478922 SHA-1: da6c5e61cf3d1fd54b6c45df0e5016903d5d9301 SHA-256: 1ccbe2c41a59e98a4cc593d82905d3e949c06445879ebf92e8636d63828abdc8
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/strik?utm_term=how+to+change+time+on+garmin+s10 PDF link annotation
    • http://fasekafalig.scienceontheweb.net/safety_1st_car_seat_guide_65_installation.pdfIn PDF document text
    • https://bimuxafidiw.weebly.com/uploads/1/3/4/7/134701061/jejigefotive.pdfIn PDF document text
    • https://nutomejeti.weebly.com/uploads/1/3/4/7/134702699/pitife.pdfIn PDF document text
    • http://tamawasobo.sportsontheweb.net/ataxia_espinocerebelosa_tipo_2.pdfIn PDF document text
    • https://nunibuzobaga.weebly.com/uploads/1/3/0/7/130740367/nokixugeguki.pdfIn PDF document text
    • https://nexudusuje.weebly.com/uploads/1/3/0/7/130740550/9ed6674a721762f.pdfIn PDF document text
    • https://fazapezipomen.weebly.com/uploads/1/3/1/4/131453522/b706c9d42cbb90.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/zisulamisozoto/what_can_intercessory_prayer_do.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/11625896818.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/bizevosazugopepe.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/android_barcode_scanner_google_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/sports_team_logo_template.pdfIn PDF document text
    • http://temodorofeg.atwebpages.com/describing_people_s_appearance_english_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/36549000095.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/padim.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/nocturne_secret_garden_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/how_to_get_an_average_of_an_average.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/putisegizuripadud.pdfIn PDF document text
    • http://mojozore.myartsonline.com/xofolifu.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/armidale_express_court_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/39970848900.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/dungeons_and_dragons_character_sheet_editable.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/repabet.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/awesome_god_michael_w_smith.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_off0000d4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CE 5428 bytes
SHA-256: 2e1cbe9127932654189d3bfb4be99eb62168543bd09d74189809968c33a265c2
font_01_sfnt_off0000e730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE730 10388 bytes
SHA-256: 64d3f0550a3adf0ab4a24ab668bdd7a9eff492880de6cc1616f9e3644cfccc6f

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