Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5515f932c16b9c…

MALICIOUS

PDF

75.9 KB Created: 2021-09-22 17:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 10195603c5e390429628a5c146a8475f SHA-1: 34e0242b4572218314749df1c1adc649c8421649 SHA-256: ee5515f932c16b9c0f2d1fc2902f1911f42191b58ffa2b3e09df454b21a37118
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated maliciousness. Heuristics identified it as a link farm with numerous distinct hosts, suggesting a phishing or scam attempt. The document body was unreadable, but the presence of many embedded URLs points to a redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5565

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://kalashad.com/userfiles/file/16157303437.pdf In PDF document text
    • https://abcelectricalonlineshop.brilliantwebtech.com/userfiles/files/55155972276.pdfIn PDF document text
    • http://photo-preiss.com/upload_files/files/16788964178.pdfIn PDF document text
    • http://aven.su/userfiles/file/favatirotetex.pdfIn PDF document text
    • http://cana.vn/uploads/userfiles/file/25402519881.pdfIn PDF document text
    • https://toyotaautobody.com/ckfinder/userfiles/files/dixavabunorojodoporizoxil.pdfIn PDF document text
    • http://sandsflooring.co.uk/ckfinder/userfiles/files/lazuriwiwigirirujukekiju.pdfIn PDF document text
    • https://shevtsov-art.com/uploads/files/sawowunikovofer.pdfIn PDF document text
    • https://lhorizon.ca/uploadHorizon/file/11819146290.pdfIn PDF document text
    • https://signika.pl/Upload/file/82961622656.pdfIn PDF document text
    • https://hydratrend.com/application/third_party/ckfinder/userfiles/files/sokeruwitesex.pdfIn PDF document text
    • https://digireg.ru/upload/rimomurinepefojape.pdfIn PDF document text
    • http://benetalent.com/upload/files/merenokaretan.pdfIn PDF document text
    • https://vannordenvastgoed.nl/userfiles/file/xunuwo.pdfIn PDF document text
    • https://uzunlarpeynir.com/dursun/upload/files/56490793459.pdfIn PDF document text
    • http://cutskytools.com/d/files/lopazu.pdfIn PDF document text
    • http://neuroxl.com/images/file/bexosiveme.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/51541ae73ebc83bad7b29aa897d4655b/70400616228.pdfIn PDF document text
    • http://bbpcosmetics.com/admin/upFiles/2021-9/file/67306823810.pdfIn PDF document text
    • http://dreamcatcherltd.com/userfiles/file/veziwiwibekovafa.pdfIn PDF document text
    • https://assofmt.org/ckfinder/userfiles/files/77579467278.pdfIn PDF document text
    • https://carrieres-pierre.com/userfiles/file/zazarabebi.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/popesefan.pdfIn PDF document text
    • https://kamhosting.nl/ckfinder/userfiles/files/71732155271.pdfIn PDF document text
    • http://skkouty.cz/ckfinder/userfiles/files/sulixokewexagubivewagogiv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=4liker+pro+fbPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD024 22828 bytes
SHA-256: f294d1de2a683dfe4a9afe779409340be7ff7fb269d6b02c02f7175b5f563d34
font_01_sfnt_off00010a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A5A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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