Malicious PDF — malware analysis report

Static analysis result for SHA-256 f56abb2dc60e6d68…

MALICIOUS

PDF

67.9 KB Created: 2021-03-09 12:33:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 63220526f36f64a4408e0cca95798587 SHA-1: 5af5af74e597cf468651782d142be1c3de6c156f SHA-256: f56abb2dc60e6d6888886cda348016d11b98025958f4c187f5bf7aabe95f752d
184 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier also indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document, likely used as a lure for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7936

Heuristics 5

  • 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.
  • 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://jacksth.ru/award?keyword=baltimore+ravens+schedule+2020+pdf PDF link annotation
    • http://lovumodezubudem.iblogger.org/wimenagosowazodidigam.pdfIn PDF document text
    • https://kigumafu.weebly.com/uploads/1/3/4/1/134131380/1958168.pdfIn PDF document text
    • https://lelusujizuzu.weebly.com/uploads/1/3/1/4/131438438/ff1990b1085b61a.pdfIn PDF document text
    • https://sizelelam.weebly.com/uploads/1/3/4/8/134867910/391b67bd.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/du3zhjh/84074414058.pdfIn PDF document text
    • https://cdn.sqhk.co/mobirewin/hiHAicR/mugokinugegofilovenoti.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/gcCgeyp/zelip.pdfIn PDF document text
    • https://xomunulozesini.weebly.com/uploads/1/3/4/0/134018183/suwaxowamobojusuk.pdfIn PDF document text
    • https://pagununida.weebly.com/uploads/1/3/4/8/134861868/noruzupibozovovidej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mirabawuwoku.epizy.com/govabitifimo.pdfIn PDF document text
    • https://8b8c7005-3af0-45a1-8e5b-a6902caa9335.filesusr.com/ugd/dbd7d9_507ab1bd4a5a46438152b12dc5da1f27.pdf?index=trueIn PDF document text
    • https://9db8f275-5044-409a-aa1b-3306d9dda9bd.filesusr.com/ugd/361f4b_4aae0c827d824586bed8d7f84022f20e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0329dad5-4b7a-4a4c-b399-f58bf0fcdd16/tokyo_ghoul_season_3_netflix_release_date_australia.pdfIn PDF document text
    • https://0503187d-52cd-4237-9521-a3cb9bf551ae.filesusr.com/ugd/5bb01c_e05124c1ffdf41d1b45177418b8bac3c.pdf?index=trueIn PDF document text
    • http://vowaderisosalel.epizy.com/borugi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98d17452-8d5e-483c-a9ab-3abb9192e5be/23230988113.pdfIn PDF document text
    • https://bf68d742-fb98-404a-ab47-1dcf24f7df52.filesusr.com/ugd/83e7fd_fd95c9940d1a41a6a6f34d48459b0bda.pdf?index=trueIn PDF document text
    • https://7404da97-7fcf-4d5f-9d5f-3f8644e6773a.filesusr.com/ugd/35f767_efcc49a999d2435db169d47d88271c5d.pdf?index=trueIn PDF document text
    • https://c78ffd2e-fc3d-4272-86ca-968d835fb7ad.filesusr.com/ugd/0f9ef0_73590c41a64f47f6838f5e363861d62a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7253e84e-b25b-410c-afe1-0c812be7e43b/mp3xd_musica_gratis_para_escuchar_y_descargar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46f298f7-2cfc-4a84-b3df-7dfdc3e029f2/xefofagirowezagemagim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43d6fd67-c283-45e4-991a-6f08731148ff/kigogolibil.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_off0000e567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE567 5776 bytes
SHA-256: b2bddc87b0f5e43a17da3b3348287280627c85e2fd03c5d6779806a83fb7ed48

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