Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8bc559ca1e730f…

MALICIOUS

PDF

73.8 KB Created: 2021-02-19 04:45:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c3346f05b07ab1b66faa92255e407212 SHA-1: 31d5d81f8d999e227f34ea50b59ab44cc3ae06c9 SHA-256: 9e8bc559ca1e730f415a3955034f3d062c690dcf8b068bca33be9205af3a55b3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://maypoin.ru/123?utm_term=oki+mc362w+black+toner PDF link annotation
    • https://cdn.sqhk.co/wepunajexiju/jgg1Cc3/destiny_child_game_pc.pdfIn PDF document text
    • https://kekixulup.weebly.com/uploads/1/3/1/4/131407102/dirofafevizamin_jezuxixok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403673/normal_601446c624462.pdfIn PDF document text
    • https://cdn.sqhk.co/murafabu/cb4sJek/touchdown_football_definition.pdfIn PDF document text
    • http://tivewuba.iblogger.org/intestinal_schistosomiasis.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzudulo/gf4idgh/benafitadiwab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474169/normal_6001e3d14cda2.pdfIn PDF document text
    • https://cdn.sqhk.co/sazobenapur/TiijcGe/real_car_driving_school_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/kovezozeseg/FjhhcqM/nedigagupufo.pdfIn PDF document text
    • https://lifexusubanipi.weebly.com/uploads/1/3/4/3/134377686/b86eae.pdfIn PDF document text
    • https://nodazijokavi.weebly.com/uploads/1/3/4/3/134315007/3e5bb621d92.pdfIn PDF document text
    • https://cdn.sqhk.co/wifavizen/hdgWuie/download_drift_x_burn_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/FKvjjii/steam_link_4k_apple_tv.pdfIn PDF document text
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/7187915.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gumigojozupe.epizy.com/danowuxujoxogas.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_off0000e1fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FB 5540 bytes
SHA-256: 5d0726915ff697b31ced32440f26086c9c3a666aa10917fb59ce8915c2e60345
font_01_sfnt_off0000f4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CA 11044 bytes
SHA-256: d9f055877465221ffa1f533618dcd677ef2a2cf3489aae66d7cb207268b1ec1b

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