Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c048f40658574f…

MALICIOUS

PDF

245.0 KB Created: 2021-07-08 07:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e980ec68eeec67fdec67b002baffb2a5 SHA-1: f59a97a2ba6ca80590abcb721582662b5640abad SHA-256: 62c048f40658574f4a2b03a13b1f8b1de2c3bc76d96c3a51dbd1aedd8f501371
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of multiple external URIs and the 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristic suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9643

Heuristics 5

  • 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.
  • 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://nomylo.ru/uplcv?utm_term=smilez+and+southstar+tell+me+mp3
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/98b370903fe8bd2d233e746d2470cdbb/44703424595.pdf
    • http://on-video.com/movies/movie_data/file/jigokali.pdf
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607accd459c4e---17139055724.pdf
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a81c7eec2ba---74949724176.pdf
    • http://hoaisonland.vn/upload/files/12900249896.pdf
    • http://nedirajtebosnu.net/userfiles/file/xarapenofobimopu.pdf
    • http://bmsorganica.com/userfiles/file/63637219455.pdf
    • https://pet-fashion.ro/mm/file/dagupuj.pdf
    • http://akinmedikal.com/uploads/file/lisuzisu.pdf
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb746773d1---zexit.pdf
    • https://bushregenerators.net/userfiles/files/61431396226.pdf
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/0nrjch73nro20ru8d7vsj6vmn4/51284222096.pdf
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090c95c85e12---surepiluxefurolomore.pdf
    • http://homenet-spb.ru/userfiles/file/45497220241.pdf
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/d3d6161d5980b714cdd2cfeddfc16046/74265457674.pdf
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f54807a99f---84720035293.pdf
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7c18806166---11101220024.pdf
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/le16om1vg3i9o75ilvbfv761v3/86173519786.pdf
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606def284af91---limutosa.pdf
    • http://kasargod.net/uploads/file/87579953765.pdf
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ae9e5837bb4---56068118501.pdf
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/2367e5009e3d017745ef4f7a3da754e1/zagadujedezowotetobope.pdf
    • http://scoutpate.com/userfiles/file/xetigopegefazuvurepitusu.pdf
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab5707ccf3---ruwewew.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00031a69.bin
9c5fbffda71a0729508e446e6cd91338d0615a9fcb0e9cbcc9966f2cd8e652b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x31A69 18216 bytes
font_01_sfnt_off00034b05.bin
cc2e127b13ac2771642edfb1ee93456788eea845be30b64fa4cee318257e4e1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x34B05 16648 bytes
font_02_sfnt_off00037d6f.bin
66ff1ba68fbcd3151174ec22a059646f62a0cb3411d8f7486255b96fc58442f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x37D6F 11064 bytes
font_03_sfnt_off000396fd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x396FD 16792 bytes
font_04_sfnt_off0003af0e.bin
bf07699e75eb6bc7266f9094867aeaf8ff89114a3ccf22ee6ea519659404633d
pdf-font-stream PDF embedded font (sfnt) at offset 0x3AF0E 16176 bytes