Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ddc4bd006d2ad21…

MALICIOUS

PDF

97.6 KB Created: 2021-03-13 21:38:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 265d230232d3c38dd22ee979ed36f415 SHA-1: 17533e2e2b7f2b3665aa2e892dd75b75f13e2308 SHA-256: 8ddc4bd006d2ad21e52a0d338538eaef3fae2055d47607b9ba38db55c9f9ebda
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as a link farm, containing numerous external links to disposable domains. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing trojan. While no scripts were extracted, the structure and URL patterns suggest an attempt to redirect users to potentially malicious or SEO-manipulated content, possibly as a precursor to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • 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://ponafet.ru/wix?keyword=us+navy+seal+training+manual+pdf PDF link annotation
    • http://future-techno.ru/victoria_beckham_clothing_size_guide5aev2.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/how_to_persuade.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/vuvolomisonozewowusup.pdfIn PDF document text
    • https://piloseweme.weebly.com/uploads/1/3/4/4/134491853/9000802.pdfIn PDF document text
    • http://sepoxudozixo.sportsontheweb.net/76094512921.pdfIn PDF document text
    • http://dezimazokuxulil.mygamesonline.org/rinefakaxodopafabasojiso.pdfIn PDF document text
    • http://vikiduxa.mywebcommunity.org/acer_aspire_e5-473g_i3_specs.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/why_does_my_mr_heater_big_buddy_keeps_shutting_off3a3i8.pdfIn PDF document text
    • http://vizilirudigub.getenjoyment.net/panasonic_toughpad_fz_g1_user_manual.pdfIn PDF document text
    • https://tokemenar.weebly.com/uploads/1/3/4/3/134337898/fanudijadago_nitefepero_zilitose_losojofuvidoxes.pdfIn PDF document text
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/6733189.pdfIn PDF document text
    • https://panejukirid.weebly.com/uploads/1/3/1/6/131606092/nunifonusuzoxage.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/zaruzekefumuga_fibobim_nifupizopif.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
    • http://vawerudarasikow.myartsonline.com/samsung_s4_mini_display_defekt_daten_retten.pdfIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_b9641fa3028a46798588f7ee47efc62c.pdf?index=trueIn PDF document text
    • https://ec08fec6-e576-400d-8504-372613838d3c.filesusr.com/ugd/57e0ce_634f7d7b1bc34a1398a5382d03364e61.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/95129852416.pdfIn PDF document text
    • http://nopawalaxuwaw.onlinewebshop.net/monster_nicki_minaj_verse_download.pdfIn PDF document text
    • https://8d94caac-80d5-4f6d-a73a-04ed47837dc1.filesusr.com/ugd/585b1d_8f32960184e44737aa7eab7a0cb6d9e6.pdf?index=trueIn PDF document text
    • http://senesijosezetu.myartsonline.com/kopawemaw.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/nutrition_information_for_edible_cookie_dough.pdfIn PDF document text
    • https://ef9d90ca-5811-4a1c-810e-75bcfae60121.filesusr.com/ugd/a33af7_603874209ec9488ca98ee01b66a12689.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/area_of_trapezium_differentiated_worksheet_tes.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_off000132dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132DD 5284 bytes
SHA-256: 43fafa6086de9ed74de4a9a7e750d051010017f5d22bfcb1d9c6c936e6158892
font_01_sfnt_off000144c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144C4 11048 bytes
SHA-256: 7e67a01044cdfdc3bd6a941ef03a81b633df5a921b8a681a7750a1b42ef699f6
font_02_sfnt_off00016ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16AB0 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.