Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda0930ca1c29968…

MALICIOUS

PDF

58.2 KB Created: 2021-05-03 02:07:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 94cccbe228adf65d2542bc5c8ef4ddb4 SHA-1: b63ef3fa496b7b31efb51eda01bf0dcde77bf967 SHA-256: fda0930ca1c299682b37c7a89bffaf39eac3856cc72356ab787347944c0b9ce7
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7237

Heuristics 5

  • 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 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.
  • 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://vilenefex.ru/strik?utm_term=how+to+open+door+on+maytag+washer PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426682/normal_60419d27408e8.pdfIn PDF document text
    • http://edevletorg.com/7746366433315ni2.pdfIn PDF document text
    • https://sozizupisez.weebly.com/uploads/1/3/1/8/131872239/vemimunugu.pdfIn PDF document text
    • http://buybritishcat.com/xazofuz7sli.pdfIn PDF document text
    • https://fizubuvi.weebly.com/uploads/1/3/5/3/135301632/matudukifisevumaxu.pdfIn PDF document text
    • https://wesotapaxo.weebly.com/uploads/1/3/4/4/134488604/timirijux.pdfIn PDF document text
    • http://pek-24.cc/fikuwadazorarusezibardnwo2.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/daxotwfciu.pdfIn PDF document text
    • http://zavodtriumf.com/2012_buick_enclave_service_manualiwalt.pdfIn PDF document text
    • http://hh666o.site/what_causes_plates_to_move_brainlyy7vmi.pdfIn PDF document text
    • http://barberking.best/kipelidonoxexipizohxgk6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405903/normal_604683a74dbac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492901/normal_5fcc2933e0323.pdfIn PDF document text
    • https://gaxatibixowoki.weebly.com/uploads/1/3/1/4/131452935/69f9b.pdfIn PDF document text
    • https://tokatukunopiso.weebly.com/uploads/1/3/4/3/134352811/4683007.pdfIn PDF document text
    • https://tirawinuzupufe.weebly.com/uploads/1/3/4/4/134445233/5229131.pdfIn PDF document text
    • http://heliusdesign.ru/tecnicas_de_redaccion_coherencia_cohesion_y_concordanciaz6qi2.pdfIn PDF document text
    • https://derovidexaw.weebly.com/uploads/1/3/1/3/131382126/kivatalidipiraruwuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408586/normal_5fcf8558e3626.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/calories_in_arbys_roast_beef_and_cheese_slider.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/76896126275.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/65444803476.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/disconcerted_crossword_answer.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d59e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD59E 5236 bytes
SHA-256: b78b9ea87c6dc6601bf747923055f76592e898a189df4784a7e647bfeb6095af