Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3b88be45efef56…

MALICIOUS

PDF

68.6 KB Created: 2021-02-01 00:11:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2d3c4b0c5ce1bb30b76cc461f1e17f12 SHA-1: 6f99c0c1012ee12ab1ef566526030a8937319744 SHA-256: fc3b88be45efef56042c465578cad171a6e5a04cd9cec384bce00d9d5f0a3bc5
186 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
  • 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.
  • 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/aws?utm_term=gcse+biology+ecology+and+ecosystems+answers PDF link annotation
    • https://cdn.sqhk.co/zewumirapeb/pjYpDha/that_s_life_joker_mp3.pdfIn PDF document text
    • http://luminar2-download.xyz/photo_art_studio_downloadd9nrv.pdfIn PDF document text
    • https://zanixikowupu.weebly.com/uploads/1/3/1/4/131437740/ronijen_zaziv.pdfIn PDF document text
    • http://badgesverified.com/rujupinokafazjhl.pdfIn PDF document text
    • http://alisaborodaenko.design/jurnal_dialypetalaenuhf6.pdfIn PDF document text
    • https://lepepapiminokuj.weebly.com/uploads/1/3/4/4/134493398/wanikovezewogox_fimula.pdfIn PDF document text
    • http://vezapom.iblogger.org/latest_tamil_melody_audio_songs_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/9hhb2jh/97353140148.pdfIn PDF document text
    • https://cdn.sqhk.co/kizafizutuw/jfUqBwA/944698844.pdfIn PDF document text
    • https://cdn.sqhk.co/jekidase/hcZigie/transferwise_money_transfer_time.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugisaxap/MkigBZX/virtual_assistant_app_for_android_phones.pdfIn PDF document text
    • https://cdn.sqhk.co/samigimas/dhaFhbg/47940648310.pdfIn PDF document text
    • http://erogan24.website/919035614935ropc.pdfIn PDF document text
    • https://sinukofulav.weebly.com/uploads/1/3/4/6/134634738/patolil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/33772244061.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/wokizajejovul.pdfIn PDF document text
    • http://gugamofizuxeg.epizy.com/brioche_roll_nutrition_information.pdfIn PDF document text
    • http://rakutekapo.epizy.com/rujome.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_off0000ce0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0A 5624 bytes
SHA-256: f2beeb3d292455d69748b70de2261d224bf53eb80f91aebd1a70fbdaa30a1a33
font_01_sfnt_off0000e129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE129 10040 bytes
SHA-256: 10d78179c94d916b1890f63bf22f24acab691b6055f4c0a332bdd5eae467d13a

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