Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aea778b35550868…

MALICIOUS

PDF

91.7 KB Created: 2021-07-04 22:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 47da81b9d6d09b1a76f412d44764b38b SHA-1: c27a2ce8dad0f6a2591f3d37c37801392cb52e67 SHA-256: 6aea778b35550868ad734ce2a52b62ed439ed9cf5afd4595aa17d734feb66143
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 ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting it functions as a link farm. These links likely lead to phishing sites or further malware downloads, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://inwebjor.ru/uplcv?utm_term=growing+out+layers+into+a+bob
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ccd66ec7e7e---89979705203.pdf
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/e2d805683b9bd4cb17d4121bb645e036/81312506256.pdf
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a498330a109---21245799142.pdf
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160704567a3528---pobodasifogawoli.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2cada9b07b---64450375889.pdf
    • http://valkexclusief.reviews/app/webroot/files/userfiles/files/48689794866.pdf
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/8c04736d3f58b8a3c52952162235e97a/mupikimuza.pdf
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f65e50a9dd---zomelusefop.pdf
    • http://airsoft1.ro/files/file/35487456853.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adcbd8daef1---10299582018.pdf
    • https://www.visitrwanda.com/wp-content/plugins/super-forms/uploads/php/files/f7e28e823dc0b98216ed741f0c3d5acf/volavigukasenukigelu.pdf
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a082d2e892d---vivugaji.pdf
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607611959e3f9---toporadakumidufef.pdf
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/419fc257c1d8374a752cd59d3db45c95/lijejufojof.pdf
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c514dcefdb3---mosabogaduk.pdf
    • http://huucodatlanh.com/userfiles/file/naneviwuzuzusuf.pdf
    • https://nanyangtextile.com/userfiles/file/52856474892.pdf
    • http://lasfyy.com/uploadfile/file/20210530130043791.pdf
    • http://nextgt.eu/uploads/file/32452313962.pdf
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c19ce0dcfdd---68375180293.pdf
    • http://josephfellerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lanojejegogobasog.pdf
    • http://beastyenergy.com/userfiles/file/midij.pdf
    • http://mfahk.com/upload/files/mefojinodibidaziwoluvobu.pdf
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/5c112540789ce72d24190bf6be970d9b/67588647429.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_off00010229.bin
a874526172f03c90309514d3af275f562b20b4c0088b3d7af67b173e51eed70b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10229 17704 bytes
font_01_sfnt_off00013070.bin
32915f5581ef4221217503106e14da9115d031e5886a5e772298a9bcd26d4c76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13070 10760 bytes
font_02_sfnt_off00014973.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14973 16792 bytes

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