Malicious PDF — malware analysis report

Static analysis result for SHA-256 468b4fdd1a3e7296…

MALICIOUS

PDF

91.4 KB Created: 2021-07-18 01:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 255a01a689fedc00749a1ab37769d391 SHA-1: 8dab42ebf329dbfa0f4a17aa8d0788840cc5eff0 SHA-256: 468b4fdd1a3e7296c038e411bbd2fe5bcdae3b24b434ed3460e47f8d3499df2c
204 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, presenting lures related to lotteries, prizes, or parcel deliveries. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://krzysztofmalec.pl/gfx/fck/file/jorazuwakuwevenuzezor.pdf In PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/4a61b91a0490fd290da7fa86fd36cf9a/14095151923.pdfIn PDF document text
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607fdd91190a9---gumozekawojoxevisawotal.pdfIn PDF document text
    • http://klimagra.pl/images/wysiwyg_img/file/3659347005.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/od8sj5235pgm6s32tg7148jfjr/zobejimimixomobapolaj.pdfIn PDF document text
    • http://skupka23.ru/upload/m/lupunanimibe.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/062efe6c551ed5bc8a74b759b2106820/dobufogigu.pdfIn PDF document text
    • http://tovicetour.com/FileData/ckfinder/files/20210605_48DE7355A52EECC3.pdfIn PDF document text
    • http://imhkayseri.com/resimler/files/27138145256.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/3f73b96684e35bc340256e1417115c57/50198654971.pdfIn PDF document text
    • http://gardatrans.com/content/Files/fumosuwigusabijakak.pdfIn PDF document text
    • https://chung-pei.com/userfiles/file/49441919733.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609727d2e878d---15592713245.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/c04fe8ba70676b585f7f0bd13188a204/21203567189.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/4be8de2c1b1cd5603e94c93293556501/sazarelivimomumukowapu.pdfIn PDF document text
    • https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608d8c27d0e39---luxidube.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/o4h50ursm1tnfrvignq0i8u9g6/650357517.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/lugufesalegolanen.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16098d6f76bfef---bakibizatonejavupez.pdfIn PDF document text
    • http://www.siposferenc.hu/html/gaxarin.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3d9861995d---surazodigarote.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/ftqo5m8ndjvvue2o3eoo79kn4q/tidasedu.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/179e68d65df8376145ca4f91bd192a3f/pugorubobovuwenaworab.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=oreo+tv+apk+download+for+android+tvPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A7 17376 bytes
SHA-256: 9d0e63ee90f10c5dd353f387149f44a332b1e52625f9afbd57be4c03c02a06bc
font_01_sfnt_off00013029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13029 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14840 10592 bytes
SHA-256: 262184ab14f05f59bebb63ec8d68cc75aa3a14e4d5d1b183dd3a5098fad669ce

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