Malicious PDF — malware analysis report

Static analysis result for SHA-256 2032bc032d53940d…

MALICIOUS

PDF

63.7 KB Created: 2021-07-09 19:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6b17e47776bf41d8268320d2e3f360d0 SHA-1: a0f936ed861bfcf8085acebb1c8c7403bfc71e0b SHA-256: 2032bc032d53940d60db54a430e5242021a7ac1e5cb3573a0d54b4a9d1f3e2ef
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to potentially compromised websites or disposable hosting. The primary purpose appears to be directing users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6960

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 https://wastran.ru/uplcv?utm_term=dougherty+county+tag+office+albany+georgia
    • http://meskerjager.nl/media/files/25114277752.pdf
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/75b2d00a1ac68b8801aaa72bca03673e/jumevaxawov.pdf
    • http://moristas.com/userfiles/files/nokonoturebipuxobor.pdf
    • http://agro-partner.com/Image/files/siwizixowisudamezitalejoj.pdf
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16087447e27fc7---1256063180.pdf
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/5e50f0cf78dbb5a606de819648a42553/sudiginifik.pdf
    • http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/42029845833.pdf
    • http://josephpowellfamilyreunion.com/clients/0/04/04c15d356d3082020e114f8c0300f46e/File/69656590105.pdf
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a119d17f714---reloniw.pdf
    • http://galettedesrois.hu/userfiles/file/kixafiligifape.pdf
    • https://obermeyer-modemarkt.de/upload/file/xebimituwuxizajekelubo.pdf
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/16078395368b8a---vosufaporujuxujitupurar.pdf
    • https://marosme.ro/hirek/file/82163866878.pdf
    • https://cncunse.com/d/files/62806542231.pdf
    • http://princeverma.in/uploads/files/rugudisetubi.pdf
    • https://vydavatelstvoklett.sk/userfiles/file/85290377497.pdf
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e8c24d04a2---16125522451.pdf
    • http://ahlhy.com/uploads/file/290647183840.pdf
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa0145cadb---safewijubatukenaz.pdf
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16079c8669008e---9370003037.pdf
    • https://advance-pack.com/editor_upload/file/5425341432.pdf
    • https://fotobolfestmeny.hu/mvc/userfiles/file/1114549767.pdf
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608475d3bb2fd---95483734562.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d21a.bin
a855cd90c0a716186b539b1245be339571704c12f1ab60d578df8b46493f6e10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD21A 10804 bytes

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