Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe2314f894d3d0e…

MALICIOUS

PDF

93.4 KB Created: 2021-06-28 20:02:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 1200fe25aa571307714f3dcf0be88f82 SHA-1: 8a6ecab4a2077a6cbe542a39f646f25c5574c287 SHA-256: 8fe2314f894d3d0e04779a4d0db4102477721f22414297d78ac1e8251da8e0a4
156 Risk Score

Malware Insights

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

This PDF document functions as a link farm, containing numerous URLs that point to various websites. Several of these URLs are hosted on compromised CMS platforms, indicating a potential phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely involving the exploitation of vulnerabilities or the delivery of malicious content via the linked sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • 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
  • 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://drafthe.ru/uplcv?utm_term=one+flew+over+the+cuckoo%27s+nest+plot PDF link annotation
    • http://cravaluos.com/ckfinder/userfiles/files/95406263940.pdfIn PDF document text
    • http://funkyspa.net/ckfinder/userfiles/files/vorezekijamolezibu.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160941ec4715f0---kudobi.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/77af9d51f469826270259bcc59611aaa/zarixowutodesamekonolav.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/c03734a082619c632c10f98818edb058/38849354934.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8635f32bf---jiwoxekelapumatetelelefo.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071e20e5e728---94854601318.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/70384808661.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/os0rhfprev4sn2i1k2kv3b2qc2/binaborowiguja.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/4b844566c70caa95968a667e982b7578/41831922072.pdfIn PDF document text
    • https://gamedunyasi.com/calisma2/files/uploads/96660652905.pdfIn PDF document text
    • http://rydelko.pl/userfiles/file/79921598258.pdfIn PDF document text
    • https://andrejc.si/files/file/tozizowo.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c943d43549---midexavipegili.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/qst1pjp7fc9kerfk6gi1qhna4c/boredo.pdfIn PDF document text
    • http://clairerolo.com/userfiles/file/rarapotamekotezipokuke.pdfIn PDF document text
    • https://kalyna.ua/sites/default/files/userfiles/file/46853950773.pdfIn PDF document text
    • http://cokhisah.com/webroot/img/files/365202453.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/47cd70b4f6f4cc785b731370021f0f32/37317644700.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/d9911835652ec4c5957528b7f418267c/76600302469.pdfIn PDF document text
    • http://banglenhospital.com/UserFiles/File/77949791451.pdfIn PDF document text
    • https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3614800ed---malizifagidonifajavizijoz.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/7545462225.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12461 16656 bytes
SHA-256: 05695380cdfa502234135e907ea452789eb65855d113ed5683fde4a398b40d01
font_02_sfnt_off00014f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F9B 10724 bytes
SHA-256: 115f6904c322f6e4a1c81886ab45b1648fa2723ae6b2b7794627fb7daca546a8

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