Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a6508cf8dcb5cab…

MALICIOUS

PDF

91.5 KB Created: 2021-08-07 14:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-16
MD5: e4ec73e73dcdd81c088c05d1d115bd18 SHA-1: f0b12da1ec0e1b27484827e23dfb04e7fd4cb667 SHA-256: 1a6508cf8dcb5cab5493adbe9c81eac75670c6583e26a4cec774d8a791f18f7d
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised WordPress sites, likely intended to trick users into downloading a password-protected archive. The embedded JavaScript stream and the ClamAV detection indicate malicious intent. The primary attack pattern involves social engineering to prompt a download, with the links serving as the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/ced734559083d18a662f489462f069dc/voxexiturojasaliworenuta.pdf In PDF document text
    • http://sacoorhealth.pt/site/upload/file/kogesabugeborol.pdfIn PDF document text
    • http://neilreardon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nexuxiporapaxofo.pdfIn PDF document text
    • http://yangs-ns.com/ckfinder/userfiles/files/20210529092248.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/342da07841b66564b9bb6b9281b5582c/fipebafifikolozeve.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/ev0l8a20lpa95df4hclscr55qf/11560731271.pdfIn PDF document text
    • http://ekotop.eu/userfiles/file/subodimejozelivoporifu.pdfIn PDF document text
    • http://gloria-eurex.com/images/blog//file/10676903763.pdfIn PDF document text
    • http://tortsurprise.ru/upload/redactor/files/gudadulusekutem.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/7m81l23qu9dm582f14g318ebcm/91729776894.pdfIn PDF document text
    • http://108homed.com/userfiles/files/manov.pdfIn PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/79d11003887866e28a1039cf01ef0b51/fagukasivoxugukibuzajal.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/ck2488r2bt5thoqheci9nupra0/nuzedaz.pdfIn PDF document text
    • http://seja.lv/assets/ckfinder/core/connector/php/uploads/files/93653435357.pdfIn PDF document text
    • http://kingsauto-bar.com/js/upload/files/lenifozetav.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1608567b94e3bc---zesosasufetinimar.pdfIn PDF document text
    • https://heritagecambodiatravel.com/userfiles/file/valotep.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/ce3e2182ca8d2e964df35b7a4659578a/zilogabatuf.pdfIn PDF document text
    • http://agroanaliz.by/upload/editor/files/21793146081.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160fde6aaf32e1---romalejepeliwuvozagopu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=ben+10+ultimate+alien+cosmic+destruction+ppsspp+game+download+for+androidPDF 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_off0000d957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD957 11376 bytes
SHA-256: 4d607dfb462cf54f64478e4b2c42390f04e6dda5bae24d1a3b6bb0621329f659
font_01_sfnt_off0000f406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF406 22632 bytes
SHA-256: dd648452afd49b77c7676502283a82e348d0e141a94fac4f3d885ac66a2ebd7d
font_02_sfnt_off00012d4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D4C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001455d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1455D 16680 bytes
SHA-256: 6a983753b7262634581accc3f79aa1d186c67a1f0aa69ab28c6bc6c260ea426a

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