Malicious PDF — malware analysis report

Static analysis result for SHA-256 d580c0025705a5e8…

MALICIOUS

PDF

77.5 KB Created: 2021-09-02 23:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ad31d57e7da552e207b776e3cd64365a SHA-1: 920a8217622e2f00f6ffb38118ced755a752f252 SHA-256: d580c0025705a5e8fe1ea0afdfaec158cd8a683277fe0b0cb160f52f8ab6e2ed
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that form a link farm, directing users to various domains, many of which appear to be compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. No scripts were extracted, but the structure suggests a lure document intended to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

Heuristics 6

  • 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.
  • 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://pixomot.ru/uplcv?utm_term=harman+kardon+citation+1+manual PDF link annotation
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/f82a81f5612a362b9ab7744480646e4f/sudule.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/guninetami.pdfIn PDF document text
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/fbdf45f767f116465b55e3c5abfbf18d/zusevilakogatob.pdfIn PDF document text
    • http://rosesrealtyhomes.com/userfiles/files/81411660051.pdfIn PDF document text
    • https://gachbinhduong.com/upload/file/92891917621.pdfIn PDF document text
    • https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160866f430ba17---ditipemaxobakuwubaxaf.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/p0sefidj8r88lu0saek8ev538n/puxoxosuduzibed.pdfIn PDF document text
    • http://efuegypt.org/userfiles/file/95535741709.pdfIn PDF document text
    • http://oldadmin.k12cart.com/media/files/pofupupanujetorokuz.pdfIn PDF document text
    • http://bhs1966maui.com/clients/64750/File/55895631661.pdfIn PDF document text
    • https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/437d142e01970e02550729c32b9445eb/pokofirumafoxedeloxa.pdfIn PDF document text
    • http://seamacros.com/upload/file/dunexabagejajonikos.pdfIn PDF document text
    • http://www.perchegouet.com/ckfinder/userfiles/files/59623740641.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/p3i4ve02h5m0skqnigj1pq7vgv/rinezevopujij.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/8a2dd40156fd3558a7e4a9b19bf4ae4e/70604225463.pdfIn PDF document text
    • http://bilmatbasim.com/userfiles/file/662836487.pdfIn PDF document text
    • http://xn--dlek-5qa.com/admin/UserFiles/file/kesajitetijo.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866ffd4b4cc---dasuwini.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160746fba5aa8e---30098397440.pdfIn PDF document text
    • https://eol.org.pe/ckfinder/userfiles/files/8689499035.pdfIn PDF document text
    • https://sonntag-immobilien.lu/userfiles/files/memofusibituxosi.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/0t3k07mcs1793f35s4gqmlf47i/jozoberexanesozowefa.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f9a539298e---vefasorukowotop.pdfIn PDF document text
    • http://eltdb.com/UserFiles/files/texafolamo.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607cfa279a37d---65685764405.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/f183deb5f7e290e7e6b6db3ccb6aa686/jixuw.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_off0000cb34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB34 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE346 17368 bytes
SHA-256: b655c4844552137b7dd761d2ee6d5b98921ee5d7afc5b24c13273dde554c461c
font_02_sfnt_off0001104e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1104E 10468 bytes
SHA-256: 35ea818405c0e48aff95bc3045c2f9b39895431bb321f988951af0a9e3476cec

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