Malicious PDF — malware analysis report

Static analysis result for SHA-256 11002d4c54290ebf…

MALICIOUS

PDF

91.2 KB Created: 2021-08-03 19:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2f48366f680766090ef4f36caf373c7c SHA-1: 11b0a597edd2c7c99013e58fc6674b8adcbd5764 SHA-256: 11002d4c54290ebff1338e1a60e8d273300a49de2caa82543ee1d3c1ba6d7164
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm pointing to numerous websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a phishing or SEO manipulation scheme. No scripts were extracted, but the presence of external links and the nature of the heuristics suggest it is likely a lure to a malicious site or a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 http://ctnphrae.com/ckfinder/userfiles/files/netijagagotafufozawojumun.pdf In PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1608677c253078---91096864093.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/wiworoxajuwiru.pdfIn PDF document text
    • http://inlovehuahin.com/file_media/file_image/file/54578933128.pdfIn PDF document text
    • http://spearsyounglegacy.com/clients/b/b2/b2c23f164518415ec8f3c1c8d0af542d/File/bodepof.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/85d4b053101ddbb99fb7e97468411a5e/61727288358.pdfIn PDF document text
    • http://proxkimya.com/resimler/files/31012543611.pdfIn PDF document text
    • http://crm333.com/documentos/file/4324236776.pdfIn PDF document text
    • http://sgd42.ru/userfiles/file/9374597580.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/163518ab61d16a5bdd2141b1f502856d/17974473314.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077ad5830c2f---gogepumafuxota.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/c4e0e4cb3104858754b7e66a8cb2c94b/20758545506.pdfIn PDF document text
    • https://ottenburger.com/userfiles/file/65103478448.pdfIn PDF document text
    • https://kurek-rowery.pl/user_pict/file/tevusenolufabekujijon.pdfIn PDF document text
    • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/66129439930.pdfIn PDF document text
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/26de666d50798b426996e4aeecc02497/kuvototarakemeda.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/k24hh1ls37ogscvjvg2q3cvv84/98327513641.pdfIn PDF document text
    • http://falconfam.com/ckfinder/userfiles/files/67846172634.pdfIn PDF document text
    • http://baybayankaauamo.com/clients/c/c9/c9e0f772d4a556598cfa564a27137582/File/49566777730.pdfIn PDF document text
    • http://messtores.ca/fck_user_files/file/kutave.pdfIn PDF document text
    • http://mnwebdesign.dk/userfiles/file/4863301147.pdfIn PDF document text
    • http://retailcop.ca/files/12570038541.pdfIn PDF document text
    • http://www.deewanalarab.com/up_imgs/mubuguteguzegejukedinote.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=fast+and+furious+7+full+movie+hindi+dubbed+free+download+1080pPDF link annotation
    • 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_off0000fde8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE8 11564 bytes
SHA-256: a32416744743727ab07eaa7ed7c1cef9dcff110fb4bbfb1a2391f24000fe59f5
font_01_sfnt_off0001190e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1190E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13120 17072 bytes
SHA-256: 86eaf52bd6bd880f027b4077d6fb4eb22c13b90c86a5da486414ce61002a99dd