Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa506330a56e28be…

MALICIOUS

PDF

70.8 KB Created: 2021-06-25 13:32:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 94502632799aaea2b2b917ac64510d5b SHA-1: 964a879c63a7e1a58e3607a75102da7fe7d91c96 SHA-256: fa506330a56e28bec66410d627cf86528d1e139a109f01446a64a552f3ddadf9
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a high ML score and ClamAV detection for phishing. It functions as a link farm, containing numerous URLs pointing to various websites. Some of these URLs are hosted on compromised CMS platforms or disposable domains, suggesting an intent to distribute malicious content or engage in phishing activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 http://aucoindeshalles.com/menu/file/73229365002.pdf
    • http://libertyquad72.fr/userfiles/file/76586412905.pdf
    • http://travelport.pl/userfiles//file/61111283223.pdf
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/oqmnrhoudif2uulmi7qp7l9tes/vemuwibufikipuxejusoga.pdf
    • http://falerisztika.hu/tmp/43404540484.pdf
    • https://diaochue.vn/userfiles/file/39374246803.pdf
    • http://lorofilmes.com/Uploads/ckfinder/userfiles/files/puxokuvizal.pdf
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/6caa9f3f173e44d33fc04cfe235685e3/64621978282.pdf
    • https://fzclicks.com/demo/files/editor/file/31519694191.pdf
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a6272c489a6---74619829714.pdf
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/3e7d6496850baa6ef24eba1d591c41cb/54749660798.pdf
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/7tq4pvf2hgapnvv733na0b9a1d/dolokimug.pdf
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/713a8f617e690dd3c625420dbaadd58a/zulunovemotarujeruvaliz.pdf
    • http://flygarfield.net/userfiles/file/wilekojijagulutuvakep.pdf
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2b6c9803b---23371250187.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=define+one+coulomb+of+charge
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3b5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B5 16792 bytes
font_01_sfnt_off0000cbc7.bin
2b86f7e6ac9f67490c17abd494a2c6a4612d933b35c47fb8bb1bb7f9cee849d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC7 16416 bytes
font_02_sfnt_off0000f61b.bin
d929b1d1aa9b52c8130c54f6764370c20b547c559ed05db04dcabb5dd2564d39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF61B 10756 bytes

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