Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4368ffc66518621…

MALICIOUS

PDF

70.3 KB Created: 2021-04-18 11:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 363bbc1f0e0026ec8c3f13e6cbf5ba70 SHA-1: 79eec42d3e074813455f1e8f10bb9ea9da8a1748 SHA-256: c4368ffc66518621660fd2e743d818182ab05d7799d06aab7b67b1a9d6ebd425
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a critical heuristic. It contains numerous external URIs, many pointing to disposable hosting, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains text related to 'Le guide culinaire pdf' and the authoring application 'wkhtmltopdf', indicating a potential lure. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggest the document's purpose is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4770

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://bologen.ru/strik?utm_term=le+guide+culinaire+pdf PDF link annotation
    • http://ziwewixowele.sportsontheweb.net/jarufelamutirig.pdfIn PDF document text
    • https://nedetuvozuwe.weebly.com/uploads/1/3/4/6/134699612/kijovepazim.pdfIn PDF document text
    • https://cdn.sqhk.co/fedugaxoloz/fAoikja/76353986345.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458621/normal_6007be0b58594.pdfIn PDF document text
    • https://lekaretuzej.weebly.com/uploads/1/3/0/7/130738752/e4af21b0845296.pdfIn PDF document text
    • http://nigodofifulo.scienceontheweb.net/ladajesimowimomiru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451930/normal_60558840c522f.pdfIn PDF document text
    • https://fulimutalez.weebly.com/uploads/1/3/4/5/134599943/nopidilenijax_gototo_sedamasozugebis.pdfIn PDF document text
    • http://1freedom.space/zajijabatuzaburidedvduq3.pdfIn PDF document text
    • https://cdn.sqhk.co/mibemofega/iidv7gg/funopejukupalelegowaxa.pdfIn PDF document text
    • https://cdn.sqhk.co/sulugedako/NgfAhiS/12178481149.pdfIn PDF document text
    • http://knitfqph.site/is_the_power_xl_air_fryer_goodaydnr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502493/normal_5ffae64c02313.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450519/normal_5ff8dcf700a33.pdfIn PDF document text
    • http://bajoreto.sportsontheweb.net/90749231270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_6058d062ab3e8.pdfIn PDF document text
    • https://cdn.sqhk.co/wefegiwezon/hcChiBK/dirasiludepuperovad.pdfIn PDF document text
    • https://kukapurabu.weebly.com/uploads/1/3/4/3/134375365/fewila-xopunujoxo.pdfIn PDF document text
    • http://wativeb.mypressonline.com/adosphere_3_cahier_d_activits.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/addition_to_20_worksheets.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/learn_calligraphy_margaret_shepherd_free_download.pdfIn PDF document text
    • http://moxixezegosa.onlinewebshop.net/zefexijevimozajisonekuvut.pdfIn PDF document text
    • http://rowoniwetob.atwebpages.com/jibizisuluwez.pdfIn PDF document text