Malicious PDF — malware analysis report

Static analysis result for SHA-256 f24a175568fd946a…

MALICIOUS

PDF

72.4 KB Created: 2021-03-22 20:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8dc2f9a6f094f662cab817b00c091c20 SHA-1: 53095c20c620bce2ecafdbe3089e51f2d5a3ba10 SHA-256: f24a175568fd946a3aff5e09699f71687bcdea7ad54531ba79192505da36095a
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=new+catholic+answer+bible+leather PDF link annotation
    • http://vajogeboru.iblogger.org/dispatchingandroidinjector_dagger_2.pdfIn PDF document text
    • https://cdn.sqhk.co/togareguko/aGhh1gg/judgement_tarot_love.pdfIn PDF document text
    • http://powerhdniy.space/ratabenabafeveg9rgbj.pdfIn PDF document text
    • https://cdn.sqhk.co/tosilura/jhhriaa/download_az_screen_recorder_pro_no_root.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/chdicG8/naduxaz.pdfIn PDF document text
    • https://cdn.sqhk.co/sebazisop/2WmhjO2/45099181508.pdfIn PDF document text
    • https://cdn.sqhk.co/turanexode/ja2PsWZ/device_manager_windows_10_bluetooth.pdfIn PDF document text
    • http://gufutaca3.xyz/netgear_dgn2200_manual_greekklpnf.pdfIn PDF document text
    • http://itwomen.space/wonuxepodub0wubj.pdfIn PDF document text
    • http://lutubapowokexi.iblogger.org/vomulujapabemebaxidota.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamozomeb/cJLifge/pikimarolut.pdfIn PDF document text
    • https://cdn.sqhk.co/labokezugumu/bFhehxb/electronic_products_inc_newburyport_ma.pdfIn PDF document text
    • http://kawlites.online/gerewulebunaxukr0nf.pdfIn PDF document text
    • http://goods-amzon.com/rakeselosol1vrbl.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/qjc62ge/one_piece_wano_arc_animation_director.pdfIn PDF document text
    • http://gufutaca1.xyz/vunajuba0jqu0.pdfIn PDF document text
    • http://gtmedis.com/how_to_pair_my_pebble_watchf03pf.pdfIn PDF document text
    • https://cdn.sqhk.co/nopavoboriru/xWft4hj/mojokewudem.pdfIn PDF document text
    • https://cdn.sqhk.co/gegefemorosu/heie4ja/bujumiwipuzawoku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://diwuzenebixo.epizy.com/north_shore_oahu_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/vivujijomuwavonudimakoka.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/goal_setting_worksheet_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/75265648950.pdfIn PDF document text
    • http://vutekumini.epizy.com/cinnamon_girl_guitar_tab.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_off0000daaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAA 5088 bytes
SHA-256: f6f304f960180911838090b50703405399462f5a2dfb990b79e2dcf7a819d351
font_01_sfnt_off0000ec05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC05 11348 bytes
SHA-256: e2290976abb075e613ee4317d6e2622d083f800dea511a6f77cfb7bd9dd205d0

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