Malicious PDF — malware analysis report

Static analysis result for SHA-256 297ffab1d8c8b8d0…

MALICIOUS

PDF

85.6 KB Created: 2021-07-04 06:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7c6d28fb3d846b4b8bbd3a0090866946 SHA-1: 0dfb3cbd4a23f090dd9be7de8531cb1cae96c7a5 SHA-256: 297ffab1d8c8b8d02f874f0afc35446f5375ba8c7982ec1803816d5338a68f52
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and disposable hosting. These links likely serve as a lure to redirect users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/907a5613aa2ed892c0bd35f6bde84aea/39910945741.pdf
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160adbb584606c---99389810905.pdf
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d62f79bc40e---ribelorekuxubog.pdf
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/101a16d7194e191b19555839a7d8be81/64866658676.pdf
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608996cfef92d---lerozakitijaxot.pdf
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/6b37809e5c2fc7072eade5ecf7d99320/39436147683.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160ae02175ddb3---sopowunimonoz.pdf
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/vba4pidql8vv0iirb7ugque57c/55870197418.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc63eb8336---62867832703.pdf
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/c6da22169048680cc45124a4e2e89548/pavetixasidibizazapidep.pdf
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3eeac5f43---lowopajefopopafijak.pdf
    • http://westboroughhigh76.com/clients/b/bc/bc4984db1d461a603911d7e4814e3e59/File/25630862687.pdf
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/afe95105a5dac5152c616be9b19234a8/69431316960.pdf
    • http://bephoangdung.vn/uploads/ckfinder/files/xodigibapojorujawo.pdf
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/9b4a6467c407fd6b75e8d6bf2188a5d6/jemeveliduxopimekomige.pdf
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160979b0cf2193---15417803700.pdf
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/nq4d2d60uac5sq273uef4v6g37/debid.pdf
    • http://jfhconsultancy.nl/userfiles/files/24310044309.pdf
    • http://bigband-ulm.de/userfiles/files/22080106285.pdf
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/gh2bduttgmg585shk7tkrn4q86/51481735291.pdf
    • http://baraanduliaptti.org/userfiles/file/sefadobumiriwarado.pdf
    • https://ctapigroup3.com/contents//files/42286479563.pdf
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/keghdo8p7k0085dv06kj5aq7n8/fimabatevidonod.pdf
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608c7ce44f76e---96732509782.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=computer+fundamentals+for+beginners+pdf
    • 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_off0000ebc9.bin
3e66e6c4e9603bc1ff191e19cd988726b66f4fc5090524f88737a490412ea8fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC9 16952 bytes
font_01_sfnt_off0001174f.bin
a14a85c9481eb5be3bc596df2891a7da5e1f20b8ff186e214f01fd21ea298f77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1174F 11112 bytes
font_02_sfnt_off000130ce.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130CE 16792 bytes

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