Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb880b720b29c726…

MALICIOUS

PDF

75.9 KB Created: 2022-04-09 06:05:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 8ccb91a6726c403c6edae69031553756 SHA-1: a81c3825457da39f4ff036590ce61fc38e0dbd5a SHA-256: cb880b720b29c72667e852d1e1dac548f9a1234e60a5485f7080c60c38be37e8
226 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.
  • 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 https://cafij.co.za/YmrXLWy8?keyword=inteligencia%20emocional%20conceptos%20de%20autores PDF link annotation
    • https://www.maniocenter.com/imagenes/editor/file/susixanabasezuvepukedeb.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20220306231741143.pdfIn PDF document text
    • https://xusisuzonetov.weebly.com/uploads/1/3/1/4/131456320/2ca8f8282202811.pdfIn PDF document text
    • https://soudureornementalelauziere.com/upload/editor/file/sokuvajuveteg.pdfIn PDF document text
    • http://ambulanceservice.pl/userfiles/file/45099218499.pdfIn PDF document text
    • http://bangladeshceramicsociety.com/uploads/editor/files/70915845206.pdfIn PDF document text
    • http://asia-test.informacittadino.net/media/files/gaxoxipewusawepo.pdfIn PDF document text
    • https://xulibaro.weebly.com/uploads/1/3/4/0/134041525/gekinore_ximig_dijobejewapi.pdfIn PDF document text
    • https://rabunuzo.weebly.com/uploads/1/3/4/5/134502988/2270625.pdfIn PDF document text
    • https://lukirikon.weebly.com/uploads/1/3/7/5/137512604/779980.pdfIn PDF document text
    • https://vurineju.weebly.com/uploads/1/3/2/7/132741272/bba82978.pdfIn PDF document text
    • http://bresky.cz/res/file/lobobufum.pdfIn PDF document text
    • https://bellcera.60km.com/upload/files/werogiwojo.pdfIn PDF document text
    • https://sikukaposarimi.weebly.com/uploads/1/3/5/3/135307882/siwemixuputoji.pdfIn PDF document text
    • https://nibejenowazi.weebly.com/uploads/1/3/5/3/135347217/9549655.pdfIn PDF document text
    • http://thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/72285358791.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000c2cc.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c2cc.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2CC 10908 bytes
SHA-256: 6824f36a64e29d892fecd7cbf171422099b05fe885f5c908427491e6f9753656
font_01_sfnt_off0000dbcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCC 17876 bytes
SHA-256: 44c0585f7a280265b120f6317a0de8fc1a6ec469c112c92adf3a670bf1f3c009
font_02_sfnt_off00010981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10981 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1