Malicious PDF — malware analysis report

Static analysis result for SHA-256 e734b1e6e5e89e01…

MALICIOUS

PDF

80.4 KB Created: 2021-06-22 19:38:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e11dec8e67e4f30a4793944a3bc85627 SHA-1: f721eb0bc0464ad766dd1effaf7d8251acc933f4 SHA-256: e734b1e6e5e89e010013415ab36240c4f049c109947a41dec5d3658657424650
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links pointing to compromised CMS upload directories and disposable hosting, suggesting an attempt to redirect users to malicious content. The embedded URLs and link farm structure strongly indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9548

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://garglob.ru/uplcv?utm_term=tam+davis+1989 PDF link annotation
    • http://attlas.center/userfiles/file/62709667555.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ed7144753e---mogonabibikudifikeli.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/srlkrl7s1tffjth5liidurin53/bedar.pdfIn PDF document text
    • http://huile-de-nigelle.info/userfiles/file/getaraporuperebezemoni.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/11740855282.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab05a90317---xibefumiborederefazosin.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609449925445b---xejupodojepemabujitijum.pdfIn PDF document text
    • http://a2designbg.com/userfiles/file/ponidevoweduta.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160af9c6e7e544---90653937830.pdfIn PDF document text
    • http://gasthaus-steinkirchen.de/img/editor/file/92419944381.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/3625aa290bd4b3307542ea00a2b354c5/59175201197.pdfIn PDF document text
    • http://tantusmarina.com/UserFiles/file/gemexil.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16070d2719bd31---kufazuba.pdfIn PDF document text
    • https://akemi.ro/hirek/file/zalerusirezekunufo.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c95a7f4f88b---juxubitukopilolivuze.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9bfe7c048---95688472510.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11857 5256 bytes
SHA-256: 460a3166463d7d38f170f0933f433ac6f98ce17419e048f2cb2a9f01c044c560

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