Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6015fa2dd0a27a9…

MALICIOUS

PDF

67.5 KB Created: 2021-02-24 14:07:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c944d5045624eff262c20d5b6bcc96d6 SHA-1: c0f0971e0e90db49820aa45ae0eba1c05f44e4ee SHA-256: f6015fa2dd0a27a90a8472e38b504a52efaed1c5f8de66f6ef4d6f825270bdd1
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=deshojando+margaritas+pdf+completo In PDF document text
    • https://dozisinabi.weebly.com/uploads/1/3/4/6/134646642/8369176.pdfIn PDF document text
    • https://sutofuwanunow.weebly.com/uploads/1/3/0/8/130874369/8742472.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/V6tC7Pl/president_speech_today_live_sa.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/hcgcOZ9/subway_princess_endless_runner_3d.pdfIn PDF document text
    • https://sopaxibifezubin.weebly.com/uploads/1/3/4/6/134608036/b3b04f860288a.pdfIn PDF document text
    • https://vibisorimujeke.weebly.com/uploads/1/3/4/3/134344086/garulumife.pdfIn PDF document text
    • https://rifivubego.weebly.com/uploads/1/3/1/4/131407021/6f62a074b2.pdfIn PDF document text
    • https://tulixepatezapik.weebly.com/uploads/1/3/4/9/134902644/rugivegexe-lerasoso-roreforekas.pdfIn PDF document text
    • http://jigitozunawada.66ghz.com/invicta_watch_battery_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/kepebeso/jvNhgij/rutaloxijijojitoliw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465559/normal_60326e1b91d90.pdfIn PDF document text
    • https://vekerarefatada.weebly.com/uploads/1/3/4/8/134868636/fujakozamibu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mopezuvo.epizy.com/are_are_kya_hua_whistle_ringtone.pdfIn PDF document text
    • http://tepusijanakigat.epizy.com/97761492301.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_off0000cac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC2 5644 bytes
SHA-256: 427c3a62e21035da8fc49791dced3dd1e697e73904a9f35c6418ca52c792270d
font_01_sfnt_off0000ddd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD7 10456 bytes
SHA-256: c52f783bc3cb0dadc9c7013312d58ba8cd52d6b49d431256f499eb545834406c

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