Malicious PDF — malware analysis report

Static analysis result for SHA-256 c98556da4f337920…

MALICIOUS

PDF

72.3 KB Created: 2021-02-24 16:13:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 66950a938a983425f559019447c9dc1f SHA-1: f8882c2095c3501368bb4fda534d1cb13a935001 SHA-256: c98556da4f337920c6d84eb24774bb5cc613aeaa91c41e34846133fe7b141579
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=elements+of+drama+worksheet+middle+school PDF link annotation
    • http://rexonina.medianewsonline.com/positive_psychology_study_online.pdfIn PDF document text
    • http://tapadobav.iblogger.org/boboiboy_drawing_apk.pdfIn PDF document text
    • http://tehnotop.space/1387332286016g0o.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/36717262765.pdfIn PDF document text
    • http://fufivepibagat.iblogger.org/menofoxarimuna.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/51795640934.pdfIn PDF document text
    • http://politach.com/cisco_attendant_console_11_installation_guidenyixe.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/princeton_review_mcat_physics_reddit.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/final_fantasy_xv_total_gameplay_time.pdfIn PDF document text
    • http://zisuroto.mygamesonline.org/what_is_the_nypd_physical_test.pdfIn PDF document text
    • http://rubka.space/experta_en_bodas_online_latino93vts.pdfIn PDF document text
    • http://yozi.store/chhath_puja_song_2019_videoz9g7j.pdfIn PDF document text
    • http://lenudes.com/19051823710jhqt2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484815/normal_5fe0c1ef6e4d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383314/normal_6029b07213c3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427105/normal_6027d1bde1da8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vorisenunajix.myartsonline.com/lord_of_the_flies_important_quotes_chapter_1-3.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/brown_vs_board_of_education_effects_on_special_education.pdfIn PDF document text
    • http://sukasorepej.rf.gd/steam_boiler_types.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/diono_radian_3rxt_convertible_car_seat_black.pdfIn PDF document text
    • http://bidasumibave.epizy.com/zesukiliga.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_off0000dee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE2 5372 bytes
SHA-256: 3230c7680d089784adaf44d661e20f2b57e5035608db032000e65fb4ddcb6c7c
font_01_sfnt_off0000f114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF114 10172 bytes
SHA-256: e04eec49446984fb8ab9ba14de3b3c196b2d7b766fa0c98b4677a9d2809b81bd