Malicious PDF — malware analysis report

Static analysis result for SHA-256 14bf3e6f07278964…

MALICIOUS

PDF

216.9 KB Created: 2021-05-01 20:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 0121ab57b58c6ab7cc7d5bff1536d1a1 SHA-1: 6e1a3299218e5412c227ccd7bb97d355faaab7d2 SHA-256: 14bf3e6f0727896418195d7513a3ebecc9b18b6c2752a4f69c07d3ec0a0ed814
66 Risk Score

Malware Insights

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

This PDF file was flagged by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress sites, specifically targeting upload directories. The primary purpose appears to be directing users to malicious content hosted on these compromised sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://gofropack.com/wp-content/plugins/super-forms/uploads/php/files/5195562e775856a47b771e0407fcbbda/5308398649.pdf In PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608591e27f8c7---denifuz.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/0f114a08adfabe17d4b7bb93f20c51a4/bazimudobobepij.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/e866b29476c236738616a748b6e4be0c/15522814185.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/e393022ccfc6sfbi0rc4dngcgi/6514451195.pdfIn PDF document text
    • http://hk-dcc.com/wp-content/plugins/super-forms/uploads/php/files/6pivev4pkmoh5t2iv7fg58fmfo/mijabemobube.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/dd789c83dc2796f37ba0115fb750386b/75623493854.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160824d1c51c36---kuzizavujarififek.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/5d0f207b6c616f5bf90262c94d83adb4/televan.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc66f1efa8---71753695223.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/fbc464eba3d26e618d62c992d4730dd6/samenazu.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608960b7a6af7---botaxug.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4bddbe45d---duvumasuk.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/653588e4aecd179e06e7caa878754388/nenimenivozak.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/2d3b62b126cd02f8919cbdee8045c68a/napizufixotul.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6d2d51c14---62553046863.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/rofuwojixekexejaga.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607712aca7bb2---2120240914.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=crimson+dawn+of+peace+sgi+songPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5C 185028 bytes
SHA-256: c1db44c1472cc3c2beacc8bb75acd3542bef5bd85f2356e75ffe6fd02bec8163
font_01_sfnt_off00031e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E69 5440 bytes
SHA-256: 7df7403f75e4d38ca7c2ef52ab1fbc17872970d38ca460f89fc82b3e5c2c1efd
font_02_sfnt_off000330e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x330E6 10992 bytes
SHA-256: fa53a41625711784a82e31864c4f743030a1028bdf3d8ddf60a9bc140c26c5f1