Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8d9d23221de92a…

MALICIOUS

PDF

121.7 KB Created: 2022-03-30 03:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: e69edd6f0cbd76cefa5de131e27fba3b SHA-1: 43bbf08d393f194c5058c44d19bac2514cc07e0d SHA-256: cb8d9d23221de92ac306b41320a25969b4650102d12e69b4016a4afeea816476
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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.
  • Travel-support phone-number stuffing scam high SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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 http://fkm-lux.by/var/upload/file/27905739811.pdf In PDF document text
    • https://bcbc3399.com/upload/files/36992813928.pdfIn PDF document text
    • https://kogozodibivuf.weebly.com/uploads/1/3/6/0/136094397/wofejor-namidig-seluxoxitikewek.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/6b26712ec037723398b766f26b080c58/rozujugenogibonela.pdfIn PDF document text
    • https://ziwarojuwetupo.weebly.com/uploads/1/3/4/3/134343479/makaxekewu.pdfIn PDF document text
    • https://vamububok.weebly.com/uploads/1/3/5/3/135317225/93adc5d2004.pdfIn PDF document text
    • https://buvonumonub.weebly.com/uploads/1/3/5/3/135304713/tirokuxodu.pdfIn PDF document text
    • https://sosalikibagog.weebly.com/uploads/1/3/4/8/134856993/wuzixeguk.pdfIn PDF document text
    • https://jabiwogox.weebly.com/uploads/1/3/1/4/131453485/bufagowekideboz-gimavufokasema-faxabep-viribe.pdfIn PDF document text
    • http://kpglearningbox.com/assets/kcfinder/upload/files/13550721980.pdfIn PDF document text
    • https://degegoza.weebly.com/uploads/1/3/0/8/130873855/9961e.pdfIn PDF document text
    • https://lozugukavokukes.weebly.com/uploads/1/3/4/3/134357100/4310040.pdfIn PDF document text
    • http://king-pro.com/userfiles/files/35215401114.pdfIn PDF document text
    • https://zunotebizi.weebly.com/uploads/1/3/4/6/134648513/b187a20e281.pdfIn PDF document text
    • http://wamer.org/userfiles/file/levevafor.pdfIn PDF document text
    • https://dagolitufewanat.weebly.com/uploads/1/3/5/3/135345669/4993633.pdfIn PDF document text
    • https://jusopusoguwukul.weebly.com/uploads/1/3/4/4/134494455/wofoluzimoru.pdfIn PDF document text
    • http://www.bioengenharia.com.br/public/libs/kcfinder/upload/files/82461029069.pdfIn PDF document text
    • https://gebiralegesexi.weebly.com/uploads/1/3/0/8/130814020/403641.pdfIn PDF document text
    • https://mipukijomov.weebly.com/uploads/1/3/4/7/134768852/c80898a53b8b6.pdfIn PDF document text
    • https://gunesuzupe.weebly.com/uploads/1/3/4/6/134679160/movis_zugem_fonetimi.pdfIn PDF document text
    • https://wuviruwex.weebly.com/uploads/1/3/4/7/134766268/6fb66376eb64da.pdfIn PDF document text
    • https://mifuj.co.za/YmrXLWy8?keyword=how%20to%20manually%20program%20genie%20remotePDF link annotation
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00017894.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00017894.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17894 18160 bytes
SHA-256: 0995a0b8cb990a86b7611c2a2cc50094cebf77d5a9d3dd63ae183a15609a382f
font_01_sfnt_off0001a8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8BD 10716 bytes
SHA-256: 471dca79795b4abb5f8948899669b3a62e525e286979455afcee68ab53c59401
font_02_sfnt_off0001c15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C15B 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336