Malicious PDF — malware analysis report

Static analysis result for SHA-256 d97dc2268e538dd7…

MALICIOUS

PDF

95.5 KB Created: 2021-08-10 21:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 316b410ca5bf45e55ef34c7f6fc98e7f SHA-1: 96e042d94263dbc668958a06867203be04d9276e SHA-256: d97dc2268e538dd733589fd2098c0464a6436f0cf7240802e6bb80b7e1970a7b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised WordPress sites, suggesting it is part of a link farm designed to distribute malicious files. The presence of a 'download button' heuristic and ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or malware distribution intent. While no scripts were explicitly extracted, the overall structure and heuristics point to a malicious document likely intended to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9902

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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 https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4937139aa---basunemu.pdf In PDF document text
    • https://ssmavidiyar.com/public/content-images/files/sukebubituzivon.pdfIn PDF document text
    • http://pytextiles.com/userfiles/file/99521159216.pdfIn PDF document text
    • http://saokienviet.com/uploads/image/files/78419358024.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/0f768b034d9256d6b5bf914985403c4f/4543871265.pdfIn PDF document text
    • http://schnauzermountainminiatures.com/clients/17729/File/34172609849.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/6fd83d48b27c7ed31a292e9cae777659/rugapukaxizuni.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/10ab127854ce20d7e2002afc5e97b5a9/durususarozevidagineron.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c5b7b69d0---84393737421.pdfIn PDF document text
    • http://www.niziointerior.pl/upload/file/bipanuzejozogarife.pdfIn PDF document text
    • http://plafondchauffant.fr//img/user/file/zefezukoronivixeg.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/188b9210ab009f08bbe8a88da176a1cd/48134949417.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adba86d1f87---61384897927.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d35157f5d1---64949438119.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/92877988348.pdfIn PDF document text
    • http://mrbossamktown.com/uploads/files/disalasepilofe.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/3049df22f2b072a89b1efc7ee67802a0/mutesojo.pdfIn PDF document text
    • http://toonesk.com/upload/14825055637.pdfIn PDF document text
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/160728d4fdc9e4---59420559667.pdfIn PDF document text
    • http://safeabortionnepal.com/userfiles/file/kapilobijiron.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0c097b6b8---63600571118.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/kilewoxo.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/rsh9i5567m8a7qj3sp401vf8nr/27988719324.pdfIn PDF document text
    • https://vildmarksjagt.dk/userfiles/file/81557372777.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/boradevolukemegotugijax.pdfIn PDF document text
    • http://bydnjl.com/userfiles/files/29294868600.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=oxford+english+to+bangla+dictionary+free+download+for+windows+7PDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000110d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D8 17732 bytes
SHA-256: 400627464ac2a6aa972c5d43d4159eebd6eca3ca4d1e4d2befe39418098f5a60
font_02_sfnt_off00013f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F1F 11272 bytes
SHA-256: 2960e9cac717d1f13f763955345e74bdc0444bfc26952933c65a442b8a714254
font_03_sfnt_off00015970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15970 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd

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