Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc7bb43b053ef146…

MALICIOUS

PDF

80.4 KB Created: 2021-07-24 19:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 651dd7b6ceba4f9ce7771b936cf2b923 SHA-1: 866006ecdfaf1ad79cd442be28064a198e5cea2b SHA-256: cc7bb43b053ef146420b79634736901e5e9549207c1db4a6d24a3f97a58b43a0
154 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting it functions as a link farm. The presence of external URIs and the overall structure point towards an attempt to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7350

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://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c01d7e793---78670857132.pdf In PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c4cde6c6879---jexezaxor.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/sibifasoniroboxazewi.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160805dcba4746---futurebup.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16089b08ed26d3---rixazewafusafevimo.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/c3e51a7518a18d480e24a3d444587d59/56851672867.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a6837c0c0---72809757491.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0513642f0---20709325616.pdfIn PDF document text
    • https://amadesafar.ir/basefile/amadesafarir/files/71385290759.pdfIn PDF document text
    • http://tulga.ru/editor/files/61398277857.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/matimigemixetutasonibixuk.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160ae054ac1f87---widoterezakadivubata.pdfIn PDF document text
    • https://toocapen.com/files/46267279169.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160829af79faad---19463525742.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e8d7073677---93814430099.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc39b804e4---fiwupitefezekesodep.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607a64a957b5c---83162652961.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/dazalefunivudusobodogoz.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/ceuros8ao7d5u4hs7hqecksur1/pazodop.pdfIn PDF document text
    • http://celyroknaterase.sk/editor_uploads/system/files/dulizefarujokewu.pdfIn PDF document text
    • http://hum-lucknow.org/test/fckeditor/file/zusitunalegasadefasukivif.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1609c00a645b2f---bifititutirusujoramenef.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160905cdff16bd---22261952140.pdfIn PDF document text
    • https://hpsoft.shop/upload/files/somegelasuvepaf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=robux+calc+free+pc+no+human+verification+or+survey+2018PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80F 11816 bytes
SHA-256: 3ae0bff4b9965aa4c2bbedd088718a94e1a2368bc79ffce61101cb21fc3b2f96
font_01_sfnt_off0001041a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1041A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011c2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C2C 17312 bytes
SHA-256: 3898add90e986bcf5ba6119d17fae3648cb031807f7c8713c05f794b2a25e78e

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