Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f8062471ea9c51…

MALICIOUS

PDF

71.9 KB Created: 2021-02-15 04:39:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: aeb74ea718432977fb32676cd00a8b7c SHA-1: 3bed7076d0b5fcf04642e1b99c2c95a8891a68fd SHA-256: 53f8062471ea9c51b016485e88b8fa46104ca6a65027892e6afd82410e8ae7b1
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://jottigo.ru/wix?keyword=skyvpn+unlimited+data+apk PDF link annotation
    • http://vehicleinsusa.com/3602592396cred8.pdfIn PDF document text
    • https://cdn.sqhk.co/todezuzutito/bOhjjbb/39145824935.pdfIn PDF document text
    • http://nesobaka9.xyz/67582636770k4viu.pdfIn PDF document text
    • https://cdn.sqhk.co/rerunaropiz/ghe4JVd/marketplace_mall_stores_open.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470532/normal_600271062f9d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464541/normal_5fcf1aead5f2f.pdfIn PDF document text
    • https://cdn.sqhk.co/tejurorado/gc5fxid/boomerang_show_bet_season_3.pdfIn PDF document text
    • http://vijufik.iblogger.org/ridizedamimimuweluroweta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401712/normal_5ff2109ca4a80.pdfIn PDF document text
    • http://aycotoro0.xyz/fojuzesazototevubiviwsarqy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_601cdc2c25a87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413966/normal_5fede19fc49cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gaxodisesi.rf.gd/22502872006.pdfIn PDF document text
    • http://nudujefor.epizy.com/video_player_free_for_windows_xp.pdfIn PDF document text
    • http://temomij.epizy.com/92277066298.pdfIn PDF document text
    • http://vesevujivodekut.epizy.com/14340371880.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_off0000d247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD247 5160 bytes
SHA-256: 5f048733ba2fbfe795df5ffcc996bc44a48ee686499f3f4294f55c2a0691647a
font_01_sfnt_off0000e3d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D4 2652 bytes
SHA-256: ceb8b62c2433e2d791a506f770356991c3d7fafcf408d2339f064d5447a2506e
font_02_sfnt_off0000ef1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1E 10416 bytes
SHA-256: 23d1497a31cf3a9416609f86abe350ec93fdc2433878ccce53375dc1ee307235