Malicious PDF — malware analysis report

Static analysis result for SHA-256 f20e6d6f56b5cb12…

MALICIOUS

PDF

66.5 KB Created: 2021-08-06 03:56:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 301502e88e48059bb826b5db81d8086f SHA-1: 10cf01db6b006918824ba186b745733a6152ed1e SHA-256: f20e6d6f56b5cb12332914fbbe194e1511adcdc9eb127bcaa88244b1e8e836da
154 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Multiple URLs point to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute malicious content or phish users. The PDF structure and embedded URLs are consistent with a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9758

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://ahkjt.com/upfile/file/13377516402.pdf In PDF document text
    • http://accomplishtheimpossible.com/userfiles_ati/file/10118563852.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/276osfdlb830e264tnqj5tvghu/41053705043.pdfIn PDF document text
    • https://vegas-shop.net/uploads/files/dibonukumitepeku.pdfIn PDF document text
    • http://daehwa.info/uploaded/file/duwojatikasunegi.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608507aeae0ac---gevudenugor.pdfIn PDF document text
    • http://aroma-es.site/yamituki-n/uploads/files/sawojaxapozovege.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16089c3ced7d53---37711403724.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160749fd17a2e8---43862475739.pdfIn PDF document text
    • https://nestaerospace.com/uploads/file/wubolovularasogibekimare.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/12hs0lbv97212r140622lnvjve/kalakul.pdfIn PDF document text
    • http://asfalon.com/__files/file/luxanuku.pdfIn PDF document text
    • https://vieclamday.com/userfiles/file/nukamosotosipigivapo.pdfIn PDF document text
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb569ded38e---73983378611.pdfIn PDF document text
    • http://cautrucpalang.vn/webroot/img/files/vifelubalokepifedamuk.pdfIn PDF document text
    • http://sushi-belovo.ru/files/25249291617.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/bnnv6jkvder3a4hbkefppgqum4/83722176103.pdfIn PDF document text
    • http://tokyoto.pl/UserFiles/file/78180380954.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/xeruvatavuvidufedad.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ec98cf4b2d3---bosejodezepulad.pdfIn PDF document text
    • https://ph789.com/pinhsuan/files/file/88851473798.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a039694930d---21878563212.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ced672334a8---lodejat.pdfIn PDF document text
    • http://kubak-ubezpieczenia.pl/userfiles/file/wovezaso.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/20217213879959.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=bushnell+tour+v3+slope+edition+user+manualPDF link annotation