Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a8e2fa248c5da8…

MALICIOUS

PDF

90.0 KB Created: 2021-06-28 07:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 8d16953fd809d9a05edf81752c190d32 SHA-1: 57f5c65193347096c0831e9721b9bfd4642c159f SHA-256: 76a8e2fa248c5da812a6b05f6d1c3e96a3a35c37e7e861acd14a7a7b9e1f77ea
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains numerous external URLs, many of which point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious destinations. The presence of these links indicates an attempt to lure users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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=vw+scirocco+4wd PDF link annotation
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/7629fa7b9cb610135f0225312723dbc9/99413344395.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16090c4501067c---62715739182.pdfIn PDF document text
    • http://www.tekkoo.net/images/library/File/xigifatupanofujaveb.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c78a9b2e559---54277109144.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/naremozodatojipezute.pdfIn PDF document text
    • https://bushregenerators.biz/userfiles/files/97435746583.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160adaa4dab281---jedigaparubadu.pdfIn PDF document text
    • https://clinicscrm.com/img/files/33349860171.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fcf1cba365---36108142221.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609321d1ab51a---zokejukipibuzunevifozixad.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/htr2mjsro71oonjckdqri4i2v0/lofidivasivemiropuru.pdfIn PDF document text
    • http://jun-travel.com/userfiles/file/66219017151.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/9h45rfr1baeiv0om1bh5vsff82/xokemal.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/hcvci2l04chd8lfd2q7a64f2m7/67851551782.pdfIn PDF document text
    • https://aquatrustfina.com/userfiles/file/mibobipozejor.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/93145333656.pdfIn PDF document text
    • https://atraba-holding.com/userfiles/file/57783805960.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/8f3c57ea397100d0342c1af97f1bc208/koridiwiditefad.pdfIn PDF document text
    • http://bjsprt.com/uploadfile/file///2021061903313575.pdfIn PDF document text
    • http://ceresasrl.it/userfiles/files/55407317149.pdfIn PDF document text
    • http://linklandhotels.com/upfile/editor/files/61605593270.pdfIn PDF document text
    • https://alamansyria.com/userfiles/file/6248557937.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c90b5a2e3d1---kogevulolakeji.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877ff1849f5---zofoxokejel.pdfIn 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://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_off0000f120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF120 23744 bytes
SHA-256: ed664beff8e47106c4eec6a25e8b0cd415c8430222801c612d7822162fea62e6
font_01_sfnt_off00012c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C75 9952 bytes
SHA-256: a4a45db2af35c277b1d48d6b5e7563ca50769a8f4126b856c0fa9d09f64ec938
font_02_sfnt_off000142a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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