Malicious PDF — malware analysis report

Static analysis result for SHA-256 e032304a4978aa39…

MALICIOUS

PDF

65.1 KB Created: 2021-09-16 03:04:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: fdcf0129ed2fbe6ac681b773f2204183 SHA-1: c8bcf6b19944f5bf9d134ffffc437c5591814ea0 SHA-256: e032304a4978aa39bcc09febfcaaa2ccd5200e3e8c69510e352f017db999c40e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable domains, and is flagged as a link farm. One specific URL, http://1utilaje.ro/mm/file/pigote.pdf, is likely the primary download target for a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7082

Heuristics 4

  • 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 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 http://1utilaje.ro/mm/file/pigote.pdf In PDF document text
    • http://gld-lining.com/user_img/files/40273801578.pdfIn PDF document text
    • https://pnp-studio.com/fckeditorfiles/file/58020247857.pdfIn PDF document text
    • https://tagoproperties.com/ckfinder/userfiles/files/20844852025.pdfIn PDF document text
    • https://epgeptech.hu/ckfinder/userfiles/files/mejomewez.pdfIn PDF document text
    • http://www.egavilanes.com/ckfinder/userfiles/files/penelu.pdfIn PDF document text
    • http://gowowdeli.com/uploads/files/53251177652.pdfIn PDF document text
    • http://gavionescodeinsa.com/userfiles/2909480430.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141130633b95---90350899251.pdfIn PDF document text
    • http://ipublicity.cz/data/file/51636073241.pdfIn PDF document text
    • http://104408017.linker.tw/files/25601194796.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/ecf20tt0pq53lbgojek0cln945/17273808943.pdfIn PDF document text
    • https://brigitte-farner.ch/userfiles/files/pokafuwerisogusezatibub.pdfIn PDF document text
    • https://parkettworld.com/upload/files/45521489382.pdfIn PDF document text
    • http://paroissedementon.fr/upload/files/28905841940.pdfIn PDF document text
    • http://marchmont.ru/imgs/file/43569111659.pdfIn PDF document text
    • http://strelnicebudejovice.cz/userfiles/file/vulifilafixisoxif.pdfIn PDF document text
    • http://salamino.pl/userfiles/file/pikelusadijis.pdfIn PDF document text
    • http://studiocommercialedelpiano.it/userfiles/files/numutowozoxibobo.pdfIn PDF document text
    • https://xn--72ca1bzcdf9cg5df4n5a8cei.com/userfiles/files/24769854570.pdfIn PDF document text
    • http://imobiliariaimperio.com/files/files/62649388307.pdfIn PDF document text
    • http://www.asiacoservice.com/file/files/69365354108.pdfIn PDF document text
    • http://ubestsports.com/imager/files/20210903095040.pdfIn PDF document text
    • http://hoangduy.vn/vn/files/deduxu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=android+10+install+certificatePDF 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_off0000e0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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