Malicious PDF — malware analysis report

Static analysis result for SHA-256 72406f6fcfc78654…

MALICIOUS

PDF

83.8 KB Created: 2021-09-04 15:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: b151df2d87095b64d89f488f04d1f39a SHA-1: 0d547679f14bd9cd090c9985cd8ba4a333147683 SHA-256: 72406f6fcfc78654089045ebaf6fc7f3cffb5ba89db78b20bca41fd191f9af2d
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or SEO spam. No scripts were extracted from this sample, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5019

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://highendschmiede.de/highendfiles/file/56064660374.pdf In PDF document text
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8c1c6e5be---84134179611.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16125031bd52f7---7167936018.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2skn2v0n0710bapbv3i3fhgmk2/50888189069.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077679354d69---vuxafojugajolufakezekewas.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608e98bb8b587---57455885592.pdfIn PDF document text
    • http://cycling-software.com/files/file/fegemurez.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/2021611837541525.pdfIn PDF document text
    • https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/14d9vhos63a65b6enb4vqhndm7/18100857341.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/57690558d8f9fc24dab5c6e74b7e9408/rasoxer.pdfIn PDF document text
    • http://grapevinewinerytrail.com/clients/876125/File/84338039812.pdfIn PDF document text
    • http://morgancountyoh.com/userimages/sirozakilakesud.pdfIn PDF document text
    • http://geyikkimya.com/userfiles/upload/file/42868170681.pdfIn PDF document text
    • http://birzebbugastpetersfc.com/files/file/lakoliw.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/d55d276b8ad8f656892db3584c5332df/27652426537.pdfIn PDF document text
    • http://heibldr.hu/FCKfeltoltott/file/butuvamugasonulusiwiziwi.pdfIn PDF document text
    • http://patroha.hu/file/2363013846.pdfIn PDF document text
    • http://placidlakes.com/larpm/uploads/file/durovesefalaxu.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/1jhp135sjclah2cs2mhqdmcr94/87722615435.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/alh6shj98ih938srd7q1vuju46/98041403982.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/nekepepefijodakep.pdfIn PDF document text
    • http://abbuffalowings.com/uploads/files/39476544056.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=canape+vector+tutorial+pdfPDF link annotation
    • 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_off00010441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10441 18268 bytes
SHA-256: 3a61bde8b385798a49143b77319b3b37fe81e30aebae3cb2bfd67c6af4e4acf9
font_01_sfnt_off00013488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13488 10640 bytes
SHA-256: a1add5528ebc14fb6babb3680bcab12a73633ea605c5fad8f54efb7886ef683d

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