Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1360866c3e6b7cc…

MALICIOUS

PDF

87.3 KB Created: 2021-07-15 18:12:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 8e534fbafcad365b264f893744605bd6 SHA-1: 6eb493cf195084faa642f7f37d710eabc4c8da0b SHA-256: c1360866c3e6b7ccb083b9b928d345203f7218f2f2d63354e471ec6a4595f3ca
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The file's structure and numerous links suggest it is intended to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4274

Heuristics 5

  • 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
  • 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://pixomot.ru/uplcv?utm_term=ibps+po+model+question+paper+with+answers+pdf PDF link annotation
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/69d5bf3739e7af81bcd1a312f823dbde/lugosimekafawim.pdfIn PDF document text
    • http://maduraigarlandshop.com/userfiles/file/40255370289.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743dcb63d30---bodifomipelineziromitu.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/b86endoecf2nq9jr8ings3ob7i/mufodapobibi.pdfIn PDF document text
    • http://www.heksan.com.pl/file/wanufuxaw.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607cfd82ec514---41834622335.pdfIn PDF document text
    • http://agro-partner.com/Image/files/63604498431.pdfIn PDF document text
    • http://vickerycarpet.com/uploads/images//files/poxotopizadarejam.pdfIn PDF document text
    • http://614move.com/clients/4890/File/82635845410.pdfIn PDF document text
    • http://cpils.com/userfiles/file/labas.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8f415377f---64450861739.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/97d6237718ba9f269e11571bb53e30df/35699181652.pdfIn PDF document text
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d03475196---neledanesurefovojo.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/16071bff06942f---69544627355.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078699637d3f---59470186363.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a935758cccf---sifel.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f15b1e480---35894797606.pdfIn PDF document text
    • http://say-international.eu/userfiles/file/denawenitura.pdfIn PDF document text
    • http://metafelix.it/userfiles/files/xokijuwutazezazawezili.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3d0502597a61a8f1db7c610bacc1d9da/80369788678.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/f05719d3729937c7cce308f9253bf706/78629044080.pdfIn PDF document text
    • http://ural-resyrs.ru/data/file/fobuwarokofofojozonenupuf.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/eca6b778ef79879414b022a851d2c5ae/34199284863.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/eb2dc087006bc76a463b13e22ba72dfe/17683439867.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094b7e5489f6---77377627663.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/f9i82jpv0e0s7i9usr6vqa6cd5/88044234678.pdfIn 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_off0000f38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38A 11184 bytes
SHA-256: 0d4e818a4051d7ef56e73e477c5ab5be74236110ea09427a0c11cb448c87d9c1
font_01_sfnt_off00010d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0C 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd
font_02_sfnt_off0001224d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1224D 16724 bytes
SHA-256: 918b1649d143d5c83a74c052ca90120d0e7c88079e790c6fea524c8d966efada