Malicious PDF — malware analysis report

Static analysis result for SHA-256 7046bf19e436a4a2…

MALICIOUS

PDF

89.0 KB Created: 2021-07-05 15:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 2de0cd4ff8dad38747ad2f437b79a9e1 SHA-1: b0ca588b2497cdf484e9a2e235f5e50d998dba0a SHA-256: 7046bf19e436a4a206b0d330ac7739a2929c0d426bef23c7924fb1264b1c4dba
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable hosting, suggesting a link farm or phishing lure. The primary purpose seems to be directing users to potentially malicious or deceptive content hosted on these external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/452120904e754448478233d3ee131ee0/wubaximoxesenirorutisafez.pdf In PDF document text
    • http://intergeored.com/upload/File/teseruru.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160724cf5e15d1---vapidoraxuzu.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/14937165104.pdfIn PDF document text
    • https://jeneifogaszat.hu/cikkdata/files/rabatag.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/aca605a4bd83911c6d1fa0ebfcbb1d8d/97860272048.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e26a231eee---nevejo.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bbcf0ed30fe---31311806964.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4db131bdf---89520400152.pdfIn PDF document text
    • https://tl-systems.hu/files/files/98366068069.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2021-7-2/20210702165630181907.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a03f1f2ea7e---fubelazeb.pdfIn PDF document text
    • https://rendiamovisibiliglinvisibili.org/file/92190818872.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607673cba9881---diritelebibedufewepotine.pdfIn PDF document text
    • http://dmhu.eu/uploads/uplib/file/dugabuguv.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/sgtuh258693llbm9aaj2lrlre2/83931757439.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/muvotozujesagilot.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/32545264999.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/rujowufu.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/29033b72eca92fda320ba54f7b240e06/funogizewebujowidomibas.pdfIn PDF document text
    • http://proxkimya.com/resimler/files/wivogutuna.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/kidux.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/gvamm5gbqcrn8pt5c9584h93oa/74838550254.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072572f2a9ff---64251873233.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=you+should+believe+mePDF 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_off0000fa90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA90 10340 bytes
SHA-256: ce03712086fa8bbfa6ff7203089d3e65839e1cc02ff355aec5228f5fc1f3a598
font_01_sfnt_off000111d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D4 16836 bytes
SHA-256: 95ba5c742be0b3b86b02ef7bcbee05c68fe06f852060ff97d599a2842b23ae98
font_02_sfnt_off00013d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D9C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1