Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb83609920cf2024…

MALICIOUS

PDF

75.5 KB Created: 2022-04-16 07:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: c87870e8404af299af50081b01989488 SHA-1: fee2336acc7d0eca748c7cb9739444e44a511154 SHA-256: cb83609920cf20240715fccb182477d44a76d3d151740047059419cdaa785a75
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://tevav.co.za/YmrXLWy8?keyword=hp%20elitebook%208560p%20usb%203.0 PDF link annotation
    • https://lifunakejeka.weebly.com/uploads/1/3/4/3/134358873/tovunol-fufuga-novelawedadu.pdfIn PDF document text
    • https://tedajurilazunu.weebly.com/uploads/1/3/0/7/130739962/40ecbbac5397.pdfIn PDF document text
    • https://bevoparekev.weebly.com/uploads/1/3/4/0/134018333/659861.pdfIn PDF document text
    • https://cowik.pl/upload/xurofawobudi.pdfIn PDF document text
    • https://pedumukelogo.weebly.com/uploads/1/3/0/9/130969284/ropinoga.pdfIn PDF document text
    • https://luwutike.weebly.com/uploads/1/3/4/5/134518400/9521595.pdfIn PDF document text
    • https://mefosenide.weebly.com/uploads/1/3/4/7/134715399/255324.pdfIn PDF document text
    • https://pirefoboxosino.weebly.com/uploads/1/4/1/2/141293351/kobumof.pdfIn PDF document text
    • https://antiquites-opio.com/kcfinder/upload/files/2226405172.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/690fa8d18046a3201468fb79446b01cc/85680474455.pdfIn PDF document text
    • https://mikedexe.weebly.com/uploads/1/3/1/4/131452733/wapimobepinafavu.pdfIn PDF document text
    • https://dejibifugav.weebly.com/uploads/1/3/2/3/132303230/7834703.pdfIn PDF document text
    • https://nidetufuw.weebly.com/uploads/1/3/6/0/136097009/kitudo_paserate_bavinozogerel_refusod.pdfIn PDF document text
    • http://wsm.hk/images/uploadfiles/file/61258598403.pdfIn PDF document text
    • https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/a011e513.pdfIn PDF document text
    • https://sibinepenisux.weebly.com/uploads/1/3/4/4/134467302/c1adcce72357090.pdfIn PDF document text
    • http://borsasetelsis.cat/admin/kcfinder/upload/files/76455354035.pdfIn PDF document text
    • http://salamatekhanevadeh.ir/ckeditor/files/files/ferizud.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_off0000c110.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c110.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC110 17244 bytes
SHA-256: d69806293ebabf733751fd79bb5cea3c10b739485b664aa3bd2fb4cf7f43bda1
font_01_sfnt_off0000ee28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE28 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001063f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063F 11072 bytes
SHA-256: 8c796f310fefd8040e3a22871d791626b8657341384552e554eb1346f33c1215