Malicious PDF — malware analysis report

Static analysis result for SHA-256 be004056e17f6256…

MALICIOUS

PDF

72.3 KB Created: 2021-07-05 00:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 48059bd0ddba72c1a60db28bb2a77fcc SHA-1: 7e9e418eb83d259b88706d254807f164ac36b97d SHA-256: be004056e17f6256acd842033dd44fa7a9462bbb922d77278c2c3cedf56ca55c
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress upload storage, suggesting a phishing or malware distribution lure. The document body was unreadable, but the presence of numerous links to potentially compromised domains supports the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/1608b77841195b---jidiradavisefimemexa.pdf In PDF document text
    • http://maurovalleferroarchitetto.eu/userfiles/files/domubulifebuwuxopitofaz.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/266c99666b07c16fea8bab6e452ec83d/fetaxoliwulimawurame.pdfIn PDF document text
    • https://vigiweb.cl/dinamicos/files/file/jizalolajasenamibebubo.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d8e342c0a85---pitujexaziwuzipodav.pdfIn PDF document text
    • http://hainescentreasia.com/images/file/77743914043.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/f74dab58d88b95cd7d62e3837f8f141c/xibib.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/eccb018873367892be6f181d9bc7bddc/wuvusenagorotapisijopoj.pdfIn PDF document text
    • https://silverwayshipping.com/userfiles/file/lobulofujomaraxivije.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/ludugutidifexuga.pdfIn PDF document text
    • https://habibitours.org/ckfinder/userfiles/files/64846991473.pdfIn PDF document text
    • https://louvre.lv/res/wysiwyg/file/91150812738.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/5f07901b4b530b4e9046034aa8f7c098/22375748779.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160793e424d72d---vapovufuboxerofese.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/78e2f0f2d98c9fe3e03a3dc0e918bd21/guniwufadiwebojukexufo.pdfIn PDF document text
    • http://andrewsexes.org/clients/867461/File/rilafoge.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160741245c98c0---26747620805.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/rgag5h561kq3hipjipetptvksc/dodozejujajaj.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/619a340b24b39c8e930a19e01eb67e17/famamajisevusuveronuxili.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a6cf9df30f---43651270862.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077518c27310---gopepidakubobexexun.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd76118b85c---12757283188.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8426d01fc2---95174460505.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e696e5f08---99585841476.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=fortran+77+and+numerical+methodsPDF 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_off0000ba0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA0C 10764 bytes
SHA-256: 338ec75b0cb18c6bf81929788c948178ea929fbf42704216a64f350d7bd4801f
font_01_sfnt_off0000d29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD29F 16520 bytes
SHA-256: 50598b3c930f32f43d7f5827efeb8bb24f15a7097c673c9b079a6598b7d26b6c
font_02_sfnt_off0000fbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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