Malicious PDF — malware analysis report

Static analysis result for SHA-256 abee5174bc81219b…

MALICIOUS

PDF

56.8 KB Created: 2021-09-25 00:13:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c3a935893efdc5e4eee8676b37a1bb80 SHA-1: 19f5a5df0a56b80bb7e458a1c751632d00a22d4c SHA-256: abee5174bc81219b14783f31de0676a4bad3f14d061ffc6ee02b8c81b9ce41fe
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, many of which point to disposable hosting or link farms, indicating a likely phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, potentially leading to the download of further payloads or redirection to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6508

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://infrive.ru/uplcv?utm_term=the+affair+putlocker PDF link annotation
    • https://fsbulletsandbrass.com/userfiles/files/50842076613.pdfIn PDF document text
    • https://www.bevillelecomte.com/ckfinder/userfiles/files/rupamitu.pdfIn PDF document text
    • https://kermoulin.com/userfiles/file/371965964.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613df3974a979---57691363152.pdfIn PDF document text
    • https://trieurodata.ro/images/file/jifavejixepo.pdfIn PDF document text
    • http://coimbra.hu/uploads/ckfinder/userfiles/files/jogupixim.pdfIn PDF document text
    • http://2478.ru/admin/ckfinder/userfiles/files/liwusuju.pdfIn PDF document text
    • http://mixline.ru/img/lib/file/wusuvejujizu.pdfIn PDF document text
    • https://035620126.tw/upload/greenkitchen/files/ramegekijopovures.pdfIn PDF document text
    • http://tantusmarina.com/UserFiles/file/rarurevimurifonekewanen.pdfIn PDF document text
    • http://test-immo.com/file/vomadad.pdfIn PDF document text
    • https://locoffice.ru/userfiles/file/firagemabuwisuralujin.pdfIn PDF document text
    • http://futimisdev.com/userfiles/file/juzisamef.pdfIn PDF document text
    • https://endobible.com/userfiles/file/rukuzimawadavubibono.pdfIn PDF document text
    • http://makesomenoise.hu/upload/file/gixagejirexikiri.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613935780ba56---tukobupifamizukelagumevuj.pdfIn PDF document text
    • http://bigbazar.cz/is/images/FCKeditor/File/11832597309.pdfIn PDF document text
    • https://listocrm.com/userfiles/files/7153169525.pdfIn PDF document text
    • http://pension-erlkoenig.de/img/editor/file/77701654586.pdfIn PDF document text
    • http://www.szphotar.com/admin/img/files/judiwexi.pdfIn PDF document text
    • https://laetitiabernard.fr/images/file/mozunedewusomiduvedeka.pdfIn PDF document text
    • http://zh-huaxun.com/uploadfiles/files/23448657736.pdfIn PDF document text
    • https://haruhonpo.com/upload/haruhonpo/files/padarunofut.pdfIn PDF document text
    • https://soudurelausiere.ca/upload/editor/file/56688538619.pdfIn PDF document text
    • http://cluster006.ovh.net/~greeters/namur/ckfinder/userfiles/files/rememumedunupobik.pdfIn PDF document text
    • 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_off0000af42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF42 10460 bytes
SHA-256: e12ffacf4ad20a03090ed375c545f8ba4325b18a4717f46ce2679fd35236174c
font_01_sfnt_off0000c727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC727 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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