Malicious PDF — malware analysis report

Static analysis result for SHA-256 7992147942dbe332…

MALICIOUS

PDF

71.9 KB Created: 2021-02-28 10:02:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 193d845e4544a20f9aa537ecc0c64b76 SHA-1: ae9dc55f19cea1a64a99d4e581073671e8f334fb SHA-256: 7992147942dbe3322ea2e0515110d4a859186acbec3fb38181d95ea375994d5b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/wix?keyword=invictus+poem+worksheet+pdf PDF link annotation
    • http://b0xberry.online/59258223615hj3i2.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/jsjfjcB/most_famous_blues_music_artists.pdfIn PDF document text
    • http://arnautmebel.ru/aetna_international_claim_form_hong_kongiw3uu.pdfIn PDF document text
    • http://romeoplanet.club/37048741185aa6om.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456984/normal_5fec847e12515.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/jhbYjdJ/jurassic_survival_island_evolve_pro_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/icK1FlS/40575993321.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvezunotumu/Pnvigd6/tatubexig.pdfIn PDF document text
    • http://pristav.pro/bluecoat_proxy_tutorialqnlp0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393485/normal_601bdf53145d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458413/normal_602597f227679.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449183/normal_60380ccc1ed08.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tejogasev.rf.gd/fulakufawafimukukaxojogo.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/adobe_flash_player_windows_10_opera.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/58862182087.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/sololearn_apk_for_pc.pdfIn PDF document text
    • http://zegolerugowo.rf.gd/zubakizeg.pdfIn PDF document text
    • http://rajuleneto.epizy.com/cursive_handwriting_sheets_free_printable_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/87525167051.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_off0000dddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDC 5304 bytes
SHA-256: 60989b2e986136e38e53b47027d0665a8732c15566e9ca4bd84709248a33e0cb
font_01_sfnt_off0000efd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD8 10228 bytes
SHA-256: 7dc0c9d71b6b693927060c6b54597fa697c29f50604b6ada3286d4fd6bc86a21