Malicious PDF — malware analysis report

Static analysis result for SHA-256 d580a3ee3a6b04af…

MALICIOUS

PDF

75.6 KB Created: 2021-03-05 17:27:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e259470f49abe3e80a70c5b66cc1eee7 SHA-1: a3e7f715cb6b08f7babe921ebdec4f7be0141cf7 SHA-256: d580a3ee3a6b04aff33e5a0c16f56a5de5c7f42a235f3635bf246b0f6710566b
166 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. It uses a password-protected-archive lure. 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 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://pelibifir.ru/wix?keyword=falcon+box+crack PDF link annotation
    • https://cdn.sqhk.co/jujijodop/iE4jchj/gba_emulator_mac.pdfIn PDF document text
    • http://keniworu.mywebcommunity.org/29472663944.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387046/normal_601dcfb10519a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372382/normal_602ea6c9f31af.pdfIn PDF document text
    • http://bejuzoz.iblogger.org/xulumivuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471081/normal_5ffba6de91253.pdfIn PDF document text
    • https://cdn.sqhk.co/konanetufuda/dTjaJsP/iowa_trails_council.pdfIn PDF document text
    • http://delozofize.scienceontheweb.net/zebra_zp_505_label_printer_b9m353.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454982/normal_6030cb1a57183.pdfIn PDF document text
    • https://cdn.sqhk.co/fofesali/1giQzhg/crossfire_volleyball_canton_ga.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/watch_tom_and_jerry_willy_wonka_and_the_chocolate_factory_online_free.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/dovopi.pdfIn PDF document text
    • http://dotekebenutedex.scienceontheweb.net/the_living_christmas_tree_company_shark_tank.pdfIn PDF document text
    • https://cdn.sqhk.co/zutujodara/lhfidig/capital_fun_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/wejideduv/IIF5tie/administrative_assistant_jobs_near_me_full-_time.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vepitejususas.atwebpages.com/unitypoint_clinic_des_moines.pdfIn PDF document text
    • http://rugapekazudi.epizy.com/wewijugowemagenabiv.pdfIn PDF document text
    • http://jemileti.atwebpages.com/xasaxifofoga.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/itunes_hip-hop_charts_albums.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17b438e6-637a-4cac-98c4-ca1087318192/hp_officejet_6700_premium_printhead_error.pdfIn PDF document text
    • http://silinodev.rf.gd/ertiga_car_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5ed5a5c-0aec-49fc-adf8-d0e1fd301a24/kemelugogufabisipevanase.pdfIn PDF document text
    • http://mudivakerimenog.epizy.com/manualidades_navideas_recicladas.pdfIn PDF document text
    • http://nowimirozox.atwebpages.com/how_much_a_hvac_tech_make.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/69036346132.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_off0000ec8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8D 4840 bytes
SHA-256: d3c74ce70f82f90082480b62040c415b34e94337f89520eb34a5020f63055ac6
font_01_sfnt_off0000fd18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD18 10744 bytes
SHA-256: ab433854b2b44a47fdd29de8a506d75fb680f9983da71d19746edc55857d5588