Malicious PDF — malware analysis report

Static analysis result for SHA-256 95bec340aa521f78…

MALICIOUS

PDF

63.8 KB Created: 2021-09-21 03:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: fa40e45000a588d6aa9446fa5b611a80 SHA-1: f1be34bec0f188b247a4f74a479001eeae3a3341 SHA-256: 95bec340aa521f78bcf6674c7a0b0aea37508762ab2260f207638cf2db077e8f
154 Risk Score

Malware Insights

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

The PDF file contains a large number of links, many of which point to compromised or disposable hosting domains. This behavior is characteristic of a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature, indicating it likely serves as a lure for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7155

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lodoshosting.com/calisma2/files/uploads/tigap.pdf In PDF document text
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/e96af0f2c678f7e24dd89910630b3d16/sesudofibenoluxivi.pdfIn PDF document text
    • https://fereshtegan.net/basefile/fereshtegannet/files/guserokalu.pdfIn PDF document text
    • http://www.sctiec.com/up_files/FCK/file/kujok.pdfIn PDF document text
    • http://mynigaoe.com/upload/file/20210907220825.pdfIn PDF document text
    • http://agrocare.hu/ckfinder/userfiles/files/99639757181.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613d042bd0265---68442034605.pdfIn PDF document text
    • http://chinalabware.net/d/files/70320835866.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613a872967931---mevofuviwujadev.pdfIn PDF document text
    • http://saimiri.name/upload/file/99376243658.pdfIn PDF document text
    • https://fetogram.ir/images/upload/files/92791246486.pdfIn PDF document text
    • http://abnig.friendship-match.com/upload/files/gevijerijezon.pdfIn PDF document text
    • https://elnativocoffee.com/silver/upload/files/65179452342.pdfIn PDF document text
    • http://extrastyle.ee/ckfinder/userfiles/files/nifiwotunuvoliwana.pdfIn PDF document text
    • http://asupuro.com/user_data/image/file/dinawuvadupexog.pdfIn PDF document text
    • http://el-system.jp/uploads/2012/files/bimefegezorur.pdfIn PDF document text
    • http://windowsplusllc.com/ckfinder/userfiles/files/24051054063.pdfIn PDF document text
    • http://dpnovelty.com/upload/files/30224098379.pdfIn PDF document text
    • https://ms02bet.com/contents/files/rakezutebonol.pdfIn PDF document text
    • http://italy-ex.com/images/blog/file/8623392458.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612fef17a239a---bazididogisonoxa.pdfIn PDF document text
    • http://redemaisfarma.com/userfiles/file/sesisatazimilib.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/32456928602.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=modern+car+parking+3d+mod+apkPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD20 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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