Malicious PDF — malware analysis report

Static analysis result for SHA-256 2970e2ab469b5bc5…

MALICIOUS

PDF

83.8 KB Created: 2021-08-23 10:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 7716b5590d5c16bdf53389ae675f2dea SHA-1: 75363f294a70cd6a3f10a4c2afa22cb76c22dc0e SHA-256: 2970e2ab469b5bc559e30585d56a8283ad63ba5b66bff1e83a84d2c44311f500
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting. These links likely serve as redirects to phishing pages or malware download sites, consistent with a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://catamma.ru/uplcv?utm_term=spinach+and+cream+cheese+stuffed+chicken PDF link annotation
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/fm4atuba6qr9grsumbtuot4150/2691982757.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/rc6r4bd30076sloh4njatbv5b4/jopevesajotinafefi.pdfIn PDF document text
    • http://zeroseistudio.eu/userfiles/files/xixumijofanetexebeb.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160ada2054d8c9---fowesinamevujirimi.pdfIn PDF document text
    • http://jinanxintiandi.com/userfiles/files/xeramewobikixikuxev.pdfIn PDF document text
    • http://abwessex.com/uploads/files/zobivinilerekivujujop.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b342c473172---86848468836.pdfIn PDF document text
    • http://sm.ac.th/ckfinder/userfiles/files/31281692945.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/mpas2q6gsqphuuei6ve0ei777o/jupopuzopuvatubozidubas.pdfIn PDF document text
    • http://dietmoiquangle.com/webroot/img/files/39778794013.pdfIn PDF document text
    • https://ce-mi.pl/uploads/userfiles/files/jaxuluxevutififuzux.pdfIn PDF document text
    • https://miaousland.fr/ckfinder/userfiles/files/26841510000.pdfIn PDF document text
    • http://chronicles.ae/userfiles/files/22110100289.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c51d0f966ab---dobegazeximalu.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/i1d5sqtg2ttdf6h16i3rr8v06d/55023447860.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202104/file/94810774837.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082d60f7d7cd---55637707080.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/0f760d7677dec6a6470dbc7771a4444f/varikojinusiboxemogo.pdfIn PDF document text
    • http://studiolegalezullo.eu/userfiles/files/7083618181.pdfIn PDF document text
    • https://safrano.pl/userfiles/file/41239834600.pdfIn PDF document text
    • http://stromzeleny.cz/file/jureretosuwuteviri.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/2e91f77e16666aeeabea26df0dab1cc0/65798594994.pdfIn PDF document text
    • https://turkihale.com/userfiles/file/topukutufojerovinalani.pdfIn PDF document text
    • http://roycraft.ca/userfiles/file/98502105718.pdfIn PDF document text
    • http://onlinemidias.com/ckfinder/userfiles/files/87779058027.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_off0000e1f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F6 17440 bytes
SHA-256: e302eaca1842e1fe10b7e0576581ddba0b7a549383677dc1921b173778b2a1fd
font_01_sfnt_off00010fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000127d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127D9 10988 bytes
SHA-256: 8403cbea8a27169ac65fcb02f71d6e18c7f4d45609a56faa8ab1350c22c213d5

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