Malicious PDF — malware analysis report

Static analysis result for SHA-256 70256a92a6b22ca2…

MALICIOUS

PDF

77.8 KB Created: 2021-03-07 22:06:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0398a05fd4cc2540679b030364f7bf12 SHA-1: 6895dc477b8699f0397c0186a73ae305f4ed1e8c SHA-256: 70256a92a6b22ca2e0cf46d103bb6591e45d0db461d87cb7ef32bcf1a082bc81
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful content, possibly exploiting PDF vulnerabilities or social engineering.

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 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://jottigo.ru/wb?keyword=the%20principles%20of%20total%20quality%20management%20do%20not%20include PDF link annotation
    • http://tevfikyuce.xyz/business_management_booksvacsx.pdfIn PDF document text
    • http://vipimuxatomefi.medianewsonline.com/9661696734.pdfIn PDF document text
    • https://cdn.sqhk.co/puwukuwos/ZJbnrIa/valgame_dios_novela_capitulo_final.pdfIn PDF document text
    • http://garanibukumom.scienceontheweb.net/musewusinimon.pdfIn PDF document text
    • http://umkatrade.ru/69129450664xcnjo.pdfIn PDF document text
    • http://imkl-checker.com/al_quran_with_urdu_translation_and_tafseer0fb3k.pdfIn PDF document text
    • https://cdn.sqhk.co/bozomixega/xjeifWX/retro_aesthetic_wallpaper_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/fekimevexi/ih28Tgh/muse_dash_switch_gamefaqs.pdfIn PDF document text
    • http://devgm.design/rejuj8ghjd.pdfIn PDF document text
    • http://securityverifiedservices.com/haikyuu_temporada_1_capitulo_6_sub_eu1b6m.pdfIn PDF document text
    • http://zubiki.top/whirlpool_refrigerator_water_filter_edr1rxd1_edr1rxd1b9dykx.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/mobile_app_development_basics.pdfIn PDF document text
    • http://siondez.ru/professional_email_writing_formate2x28.pdfIn PDF document text
    • http://spainwow.pro/vutinivavogevetomanvenex.pdfIn PDF document text
    • http://ital-tess.space/australia_crpd_reporta6qja.pdfIn PDF document text
    • https://cdn.sqhk.co/livixugakuf/e1icjgq/download_dirt_drive_offroad_simulator_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvexudid/Z2iigih/90080372093.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/ribowexulo/xozod.pdfIn PDF document text
    • https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_0f50a17dfe8f4fba880a712bdff0c2fd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/house_of_night_series_in_order_to_read.pdfIn PDF document text
    • http://pudolajuji.atwebpages.com/de_que_trata_un_mundo_feliz.pdfIn PDF document text
    • https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_1066c7d3918243eaae974475789e2001.pdf?index=trueIn PDF document text
    • https://1b6fe947-be7e-4494-9a94-f566f178d3d1.filesusr.com/ugd/89064d_254c9fc36855486aaed1c83a15086c3b.pdf?index=trueIn PDF document text
    • https://cc46d2ba-e7cf-42f8-aa62-b015a0c17ef0.filesusr.com/ugd/d180c3_30314065c2f24a1294acf13fd666d819.pdf?index=trueIn PDF document text
    • https://12f7643e-9106-4823-89c2-0bdaecd1bc22.filesusr.com/ugd/1f6d71_3ed67cad3bcd471a9360e445a51c5c85.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/car_racing_games_2015.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_off0000f238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF238 5744 bytes
SHA-256: 3d1f56eac60851627bb329371937b6bd4d4a549637edaae3551e878119d8c2fc
font_01_sfnt_off0001059d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059D 10268 bytes
SHA-256: 48a2d39541c752bc2716fa82c4cb4afbe8705f0cccf515f10b5f57ebe870dba3