Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca7b29df798a447…

MALICIOUS

PDF

82.9 KB Created: 2021-09-02 19:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: af4b1391b8e692457827bc45db934e49 SHA-1: 5f0c2d8b5b92df824d24dc22a7afb48c47bd7342 SHA-256: bca7b29df798a447cf5580e7a24c0cfa4e849d0f54c71471a1c3e3ff2fd80609
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised WordPress uploads and other disposable hosting sites. The primary purpose appears to be directing users to malicious content hosted on these external sites, potentially for credential harvesting or further malware delivery.

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 https://alixdemassy.fr/userfiles/file/merixudozuwevo.pdf In PDF document text
    • http://xn--9w3b11kh5l.com/ckupload/files/jikapuxagufakixuramu.pdfIn PDF document text
    • https://coolingrealestate.com/your-home-cleaner/FCKuploads/file/15354420085.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/161045e3432968---48220409564.pdfIn PDF document text
    • http://i-biohealth.com/files/65288240350.pdfIn PDF document text
    • https://fonixkoncert.hu/upload/file/98084716361.pdfIn PDF document text
    • https://irish-setter-zucht.info/ckfinder/userfiles/files/vunebulawaxolipixufujetir.pdfIn PDF document text
    • http://mashhadgardi724.ir/basefile/mashhadgardi724/files/17956622409.pdfIn PDF document text
    • http://mebelhotel.ru/images/news/file/zupox.pdfIn PDF document text
    • http://qlinairnv.be/userfiles/file/62929385187.pdfIn PDF document text
    • http://nissanotogovap.com/uploads/images/files/50544904612.pdfIn PDF document text
    • http://gintaras.cz/userfiles/file/43046626400.pdfIn PDF document text
    • https://yukkumpulgroup2.com/contents//files/gokolekupofagiralutoxomop.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/c7b52c11d19fb11de3de645ced751918/xapogagifituxi.pdfIn PDF document text
    • https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/1ebb9g06925egii5imcni6meme/zekilateneje.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6dbfa870c---zawufep.pdfIn PDF document text
    • https://biogenetixpharma.com/ci/userfiles/files/wifalamofaxuru.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/ec882c6bc676ff89fe2f0c9be34a27fd/23696437953.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e80df2cd25---xulumogedaxiko.pdfIn PDF document text
    • http://farmaciafici.com/userfiles/files/53174679372.pdfIn PDF document text
    • http://jiuxingchaoshi.com/uploads/file/040014362728.pdfIn PDF document text
    • http://tpokebar.com/uploads/files/kifinerugodidigugi.pdfIn PDF document text
    • http://hichipper.com/hichipper/uploadfile/file/2021090117113973499.pdfIn PDF document text
    • http://ztkammer.at/uploads/file/59259578253.pdfIn PDF document text
    • http://celiapopememorial.com/clients/4/45/45605e685ba8a3b32f56966823665796/File/jurixuzijuxonusibosofite.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=ludwig+boltzmann+pdfPDF 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_off0000dc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42A 10784 bytes
SHA-256: 4bc29a3593c16d6b1c8b95439bffbf597f2f6d2cf855724b25b123fd507fcc46
font_02_sfnt_off00010c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8F 19640 bytes
SHA-256: 9ef75c8b216e2201ca190b77e06afe75861e215a2966eba7700b924877f8842a

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