Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f9285000797718…

MALICIOUS

PDF

68.4 KB Created: 2021-09-17 09:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b5f98fdd6bd00c3298e15883473eb1a4 SHA-1: 3a06f99e932e1a8758ab7806d101064fa7cec743 SHA-256: 06f9285000797718c8618837910f601d8642d159e347614820ae34cf63300b29
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external URIs and link farm heuristics, indicating a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this. The document body is unreadable binary data, but the presence of embedded URLs and the link farm structure strongly suggest the intent is to lure the user to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5262

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://inwebjor.ru/uplcv?utm_term=how+to+copy+gallery+from+android+to+android PDF link annotation
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/161425406cc355---vadutopadividexezomot.pdfIn PDF document text
    • http://energosol.pl/images_cms/file/kinodavugalomuwufa.pdfIn PDF document text
    • http://77owship.netsociality.com/upload/files/zozitevolivetaganakofofa.pdfIn PDF document text
    • http://55pluscommunityspecialist.com/userfiles/files/rubav.pdfIn PDF document text
    • http://csc0532.com/userfiles/file/20210917063117_pvadt1.pdfIn PDF document text
    • http://lindseyderence.com/userfiles/files/38193939479.pdfIn PDF document text
    • https://copyjokertw.aw6.tw/uploadfile/qu4_qu106_com/files/nefax.pdfIn PDF document text
    • http://519pf.com/userfiles/files/durasozutogitukamatuko.pdfIn PDF document text
    • http://xaydunglenguyen.vn/upload/files/3066e0.pdfIn PDF document text
    • https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/momobunamolus.pdfIn PDF document text
    • https://wemservice.com/ckfinder/userfiles/files/54148005262.pdfIn PDF document text
    • http://weorderfood.com/uploads/files/92710408415.pdfIn PDF document text
    • http://gmart-express.com/demo/uploadpic/file/ropizuniputumorozoka.pdfIn PDF document text
    • http://ctcinsulator.com/uploads/file/28105183025.pdfIn PDF document text
    • https://pelicanfinancialnetwork.net/ckfinder/userfiles/files/12995364329.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/ponifudabutetu.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/161342d73af2e4---99818458725.pdfIn PDF document text
    • http://tiwtactic.com/userfiles/files/povewupesatagamutim.pdfIn PDF document text
    • https://tommytest.dish1314.com/data/html_editor/files/ludajizolenogo.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/fjgdk87r5sqo7d70tlpbd633f0/kopudilizatedulitawo.pdfIn PDF document text
    • https://stradatextiles.com/upload/ckfinder/files/zefiwinunoruz.pdfIn PDF document text
    • https://sanagustin.cl/files/wuvinobi.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/54c0e2040b748ac952b3ae32ee7acf5d/24959595360.pdfIn PDF document text
    • http://synfarm.com/upload/files/84964250315.pdfIn PDF document text
    • http://silesiacapital.eu/data/file/98662616821.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/cm5m39740ela5kp3rdteo1fnd6/57022520474.pdfIn PDF document text
    • 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_off0000e9c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C5 10984 bytes
SHA-256: a3ebd84d901730494f14bcde6a9477a9880311882f9204c768680ac13d166e26

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