Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c755d9ff96781c0…

MALICIOUS

PDF

85.0 KB Created: 2021-06-20 01:09:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d7f3f31621e1b0ae91738df0363ab3f9 SHA-1: b734f08b3162ccd70572d51acb07f8bb57ca2803 SHA-256: 6c755d9ff96781c05f6bbde41d2ad79d60f58f4080971d112eaa830b82ef5f84
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier. It contains a link farm pointing to numerous compromised WordPress upload directories and other disposable hosting sites. The embedded URLs suggest a phishing or malware distribution attempt, likely disguised as a document related to 'the director and the jedi documentary'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://huntic.ru/uplcv?utm_term=the+director+and+the+jedi+documentary+watch+online PDF link annotation
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/tha9touu7hinmpfmaamhleiifd/voferanivebukofupef.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/24im6ld5t1c0dhlqn8k5ut1h1u/97169707615.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/72ae4c10f4c28c9304f14de782a87532/xuruxolopobu.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/74382955668.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/10992753928.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/9a6747898db52847edd01ec5b13e4f27/74287742824.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/99714896120.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160996ba5dc8d1---xujufonekabiwinitolonek.pdfIn PDF document text
    • https://upchealth.net/wp-content/plugins/super-forms/uploads/php/files/d4f56c3b01e7eb9c7c0c0f8a870699f6/rojesi.pdfIn PDF document text
    • http://puzynowska-kancelaria.com/userfiles/file/duzoraradebufolis.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/fb4ad61ddf964ddf4ccabb46c3874d6b/65219258965.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160b94ffc8d62a---55211037397.pdfIn PDF document text
    • http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/16084d793a4771---tenigeborezubajepijuge.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cceea72b81---fugopisuxitaz.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/qbjk1tplqskfpr53hqom79lr6h/gofolofodivomiwigup.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a6466ee6dd0---gofuzovusidogiguzetojefe.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/4b316d2cdeb713f81d4119d66b66cc0b/75788498359.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/f2ab15f853783d6d348c512321c7e475/giregeritelerapa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80F 5220 bytes
SHA-256: 72fb990f6e53add8c8bdce47856e3f0a70bc11405fae0cae9d976bc0e3b6501d
font_01_sfnt_off000109ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109BA 10560 bytes
SHA-256: 9fe6a30e686fc9d68084177135a05522d01542da2bae16e5c4f0b3dc2b4e02ef
font_02_sfnt_off00012dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC5 16616 bytes
SHA-256: 25da4d0259edcb98e59a4fe79427651a73902f0cb209792fc7f5803c2d85b23e