Malicious PDF — malware analysis report

Static analysis result for SHA-256 06d6be16e7af2ce0…

MALICIOUS

PDF

99.3 KB Created: 2021-06-28 03:49:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 8050e9a752ebe2ed28d68ce44dacc691 SHA-1: f3de177535448f3ba5e43d1be2bfb41ce3b86d20 SHA-256: 06d6be16e7af2ce08b07f2b79dcf77aff7b511db4d1669968eccc76d30cfda06
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised WordPress sites, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics. These links likely serve as redirects to malicious content or phishing pages. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

Heuristics 5

  • 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
  • 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://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/53302138071.pdf In PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/6a8ac5983a5f1e16a26f5683836f1531/99484609675.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/qtvri8vjk288rqhfmtvds29hpv/lesuxolokixarerer.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/88h4rk8s5n5k2akreamhavclrn/44320571402.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/o3bgp7kmb7g1pl8n5hots4uf30/soxekurolabixojezitilezu.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd358f816d6---kuroxulexujutitakuzigu.pdfIn PDF document text
    • http://logiccpacma.com/ckfinder/userfiles/files/kagekede.pdfIn PDF document text
    • https://kme.pl/global/app/webroot/uploads/file/16240024406794.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160bf2af2a37df---defaga.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606d214ddf694---95120125144.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/6lntl7rrvh38od6bobmbp7b6jh/66295274185.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/92970856521.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/988b97946d325a68fb46f9bd3e27fff3/xovafureviwebubaliduwum.pdfIn PDF document text
    • https://fruzsiflame.hu/userfiles/file/fogemeramujej.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b2462a0a74d---xapedanumaribevefosuvesas.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/d1cf99789236ee32b05b87be37268571/11593242863.pdfIn PDF document text
    • http://0965818789.com/CKEdit/upload/files/65047747455.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075078a9cf84---64415880500.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0326246b2d---63368733427.pdfIn PDF document text
    • http://www.fonfe.com/uploads/files/61996293085.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dce7378c66---zukavolanofosorikumubazi.pdfIn PDF document text
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/1608690c2a65d2---52882594431.pdfIn PDF document text
    • http://polkovnik.su/upload/file/zatizawetikekiwisi.pdfIn PDF document text
    • http://au-coeur-du-temps.com/userfiles/file/23438338825.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=free+volume+booster+for+iphonePDF 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00014f74.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14F74 26116 bytes
SHA-256: a46a3dba65efd01892541d105fedc489cccffba56c12f4221638a5c3693b5c88
font_00_sfnt_off0000f047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF047 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001085e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085E 10744 bytes
SHA-256: 8db53f109bebe65a6c7ae80c8a50659136e646d6f06bf8c6f49875a076fffa3d
font_02_sfnt_off000120a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120A2 17904 bytes
SHA-256: 93ed82e2d32ea7ebc4da952acb79c27a0c3c875031d5b494364868495ef421fc

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