Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfca60f1d5ddd66b…

MALICIOUS

PDF

67.6 KB Created: 2021-02-03 02:01:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc864224133e8863c6171364121ae9b7 SHA-1: b6e31c8b726495b0cb5f98d8466b801718e13a87 SHA-256: dfca60f1d5ddd66ba6c42e23ece5fc303f382eb361a19bc26e94906af294c014
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many pointing to PDF files on various domains, suggesting a link farm or SEO poisoning attempt. The primary URL, https://jottigo.ru/aws?utm_term=autocad+autolisp+programs, indicates a lure related to 'Autocad autolisp programs'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/aws?utm_term=autocad+autolisp+programs
    • https://cdn-cms.f-static.net/uploads/4444657/normal_5fd175da0dbfc.pdf
    • https://cdn.sqhk.co/kisesawaropo/cmhfiin/83480083422.pdf
    • https://laxafukiwa.weebly.com/uploads/1/3/0/7/130738625/zenuxenu_pijesupivapol_nefapejar.pdf
    • https://cdn.sqhk.co/xubupigegi/cijwzCM/microsoft_authenticator_app_on_new_iphone.pdf
    • https://cdn.sqhk.co/fasotaluvose/2hcQVQm/93078270159.pdf
    • https://jodatonibidoxej.weebly.com/uploads/1/3/5/2/135297120/jusujaze-naxarofopedulig-fujosofebila-vexizef.pdf
    • https://cdn-cms.f-static.net/uploads/4462362/normal_5fd99ad2addba.pdf
    • https://static.s123-cdn-static.com/uploads/4423732/normal_60085dee65115.pdf
    • https://cdn.sqhk.co/xuzalolotagi/Aqgggii/47300712502.pdf
    • https://kekixulup.weebly.com/uploads/1/3/1/4/131407102/65723.pdf
    • https://cdn-cms.f-static.net/uploads/4501201/normal_601183de2ce2f.pdf
    • https://vozokeku.weebly.com/uploads/1/3/1/8/131857213/melofafudasuwozugek.pdf
    • http://gosologesegob.iblogger.org/kadidavugusasojoga.pdf
    • https://cdn.sqhk.co/xoguvamev/cYJ8fIJ/black_art_wallpaper_hd_for_android.pdf
    • http://kipivejezijab.iblogger.org/13509281018.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lubesugoninop.epizy.com/68952146966.pdf
    • https://s3.amazonaws.com/perurulexi/kujifetutowixezixazumusi.pdf
    • http://mezomiwewelebe.epizy.com/contrast_conjunction_worksheet.pdf
    • http://bowupezik.epizy.com/apocalypto_movie_online.pdf
    • http://ruxopagotar.epizy.com/beauty_standards_around_the_world.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5b9.bin
8b57ebd98d3f3352bb4561b7ef771f53c565427c1f0853eb290dba871945eed2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B9 5380 bytes

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