Malicious PDF — malware analysis report

Static analysis result for SHA-256 9085f1af020ccbe6…

MALICIOUS

PDF

69.6 KB Created: 2021-02-14 05:43:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 73334bce9ce36d9c5750b084d7fd72ca SHA-1: 97768e08a711229d0581f1b8135f97ff4fbabf7d SHA-256: 9085f1af020ccbe6ba166ac27869dae5000f6c78ba57f8eac448af2891885106
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://yafferge.ru/wix?keyword=fifty+shades+freed+watch+online+free+without+login In PDF document text
    • https://cdn.sqhk.co/mofinopedas/mQiahjT/kenny_chesney_greatest_hits_album.pdfIn PDF document text
    • https://cdn.sqhk.co/kopizikob/Kgfggsy/night_of_the_full_moon_diaries_guide.pdfIn PDF document text
    • https://vemusosafuz.weebly.com/uploads/1/3/1/3/131398108/3988382.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/jacv5je/super_car_racing_multiplayer_apk_pure.pdfIn PDF document text
    • http://nature-ital.space/nirixq6a79.pdfIn PDF document text
    • https://dezilitew.weebly.com/uploads/1/3/4/7/134728488/lokotodevori_rizutoliserazo_pujupufetexibul_joraturejonosu.pdfIn PDF document text
    • http://afracheat2.xyz/pesikekakixawerulerafosoh6t9r.pdfIn PDF document text
    • https://mozofejetexutik.weebly.com/uploads/1/3/6/0/136051344/zedizunukiviwem_sukiko_jugewixiwig.pdfIn PDF document text
    • https://cdn.sqhk.co/luvutagawata/DknxhjV/14452434542.pdfIn PDF document text
    • http://copyrightram.net/designing_brand_identity_bookgrd60.pdfIn PDF document text
    • http://mysteps.online/adobe_flash_professional_cs6_crackku58b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mefowoweman.epizy.com/airman_s_information_manual_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/pomopedagomunut.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/96867914160.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/36912907509.pdfIn PDF document text
    • http://vudatuvabejosix.epizy.com/fiwiponujipabonabumawi.pdfIn PDF document text
    • http://wupefalamakiku.epizy.com/codewarrior_6._3_free.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_off0000d38b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD38B 5432 bytes
SHA-256: d3c749405af77dc8def3dc9449925fc71f6c0b24ff6916658b6446544370a9e3
font_01_sfnt_off0000e622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE622 10224 bytes
SHA-256: ab40dff59a1221adc9971e0c8cf94f5d1ce4acca1d8ddbdb228158c7c8c1d4b7

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