Malicious PDF — malware analysis report

Static analysis result for SHA-256 872f0c15585c48cd…

MALICIOUS

PDF

101.5 KB Created: 2021-05-20 09:10:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00f089ddb6bdec08511b53ccdd5373b5 SHA-1: fa13f52d545f9813a35e26b81c935f041e0cecb2 SHA-256: 872f0c15585c48cd8cc4c1d690e73f9369912594217902262eb6e03a8f9da0b2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or trojan delivery mechanism. The document contains a link farm pointing to multiple compromised WordPress upload directories, suggesting it is designed to redirect users to malicious content. The presence of external URIs and link farms on disposable hosting further supports its role as a lure for potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7898

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 http://adabaskimerkezi.com/upload/file/18288365296.pdf
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/745dc017ee8aa20f3278a9e851b55228/45026472507.pdf
    • http://ezibra.pl/upload//file/27583298327.pdf
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/mc59efo4ulb865n5i2jhkcfed8/83438394411.pdf
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/5ee254f7596b2ff187803ffaf6ff0350/74488706058.pdf
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/4de4fcad905caecef87eaeb334ef52be/33636449983.pdf
    • http://ibb-online.ru/f/file/tovaberitexibi.pdf
    • http://firegallery.ru/img/upload/wibuvedobutejusute.pdf
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/d57b2bab8c1920f7077a95931c3ddd8e/48809831082.pdf
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/0ngv6kttvql15lck369pfretrg/sedolijovubofenidiweruvol.pdf
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/gbk0iemgulfmvnskv93m6c69c3/45340449425.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/7vc2rbl80j7dmckbffspjdffl5/befibudofakakakaku.pdf
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/rrrni2vr7nvt6uqjko9ktc0pnb/fuxanepejenaf.pdf
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb0fce7b85---58598642964.pdf
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/0etf5ok934uigoqg7gjo1oslmt/sizorawov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=how+to+get+a+custom+skin+in+minecraft+education+edition
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000168f6.bin
ab0e463341ef1ad4b2a89c6f6aafdb8639f9ce0d23cb2f5788e5cf3d79f3cac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x168F6 5428 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.