Malicious PDF — malware analysis report

Static analysis result for SHA-256 e275b5eb9830993a…

MALICIOUS

PDF

65.3 KB Created: 2021-05-04 04:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54608741bce2334d1bddd22990741996 SHA-1: 3e8dcae8b5747a531c94e1b830a3bbed97ada889 SHA-256: e275b5eb9830993aa86a9706c2664e49e1adf218f1a2eb42bc2baf70d23734b4
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs points towards a phishing or malware distribution attempt. No scripts were extracted, but the overall structure and URL patterns are indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9536

Heuristics 4

  • 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://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/051a066c4c3e3a96a6258cb435399ecc/winafixa.pdf
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f87287eb41---20230947105.pdf
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/892k61pciojbmrsffqrq1041qj/sulipefopiwobuvo.pdf
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/a8723994fdf8c9d75eefad2883d9574a/vigivizeronosexuwosid.pdf
    • http://orgue-chantepie.info/FCKeditor/upload/file/zagajadilamerededem.pdf
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/a2262d074238b14cfd318cde31911426/rujabisexas.pdf
    • http://mousike.it/img_ins/files/betojugipufefepemejaf.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/2962886499d0c52dda87f06f87f46c8c/kekix.pdf
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/db25967a34f443f412c601deff10c9b1/67466825146.pdf
    • https://bonafideonline.com.ar/wp-content/plugins/super-forms/uploads/php/files/7eaae68e7035d723964d1872b1c50b5f/zukoxabosum.pdf
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f392a6c843---dewiza.pdf
    • http://zabradli-znerezu.cz/userfiles/file/15357505018.pdf
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084c4e59be0b---wutujireredudazarilozene.pdf
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea3ad9c4cd---93184083836.pdf
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/6b8cbe28a2c8de07dd433e2d109d8e24/95795868478.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=inductive+reasoning+worksheet+2.+1
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c867.bin
8c880e7d65efe1bec57d7d45704dd22506b506a8c3634dfef7361bc5377ea456		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC867 5536 bytes
font_01_sfnt_off0000db55.bin
2d0f1085ba1c7b45ce0d5ac617b03aaeba770eedce732913cbeae1e91a6bd91d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB55 10004 bytes

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