Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc65696db63e4ba3…

MALICIOUS

PDF

104.1 KB Created: 2021-06-28 06:11:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: aa06af8eaecd113a02cda151ef07cbae SHA-1: b219eca0ff022f39df5a5763f0c369fb25ec47db SHA-256: bc65696db63e4ba347e027150bfd515741372cf725a675df52d0a911f4cf3a47
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious by ML and ClamAV, exhibiting characteristics of an advance-fee scam lure. It contains numerous links pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting an attempt to distribute further malicious content or phish users. The document's structure and content align with common advance-fee fraud schemes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://pistant.ru/uplcv?utm_term=economics+class+10+let%27s+work+these+out+answers+chapter+3
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/1avg3fv691r50dv6618g4hilok/bufumudes.pdf
    • http://bjjiffy.com/upload/94268889995.pdf
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9530960f45---nudinezutazixetad.pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/f38fd809ab6a339203042d2c1ec19c57/86487626842.pdf
    • http://ceskylakros.cz/userfiles/file/40703872525.pdf
    • http://afghansolar.com/userfiles/file/xejopakidititova.pdf
    • https://getracemirates.com/userfiles/files/40545086732.pdf
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f7fb11457---34412735451.pdf
    • http://bbfederico2.net/userfiles/file/zibejefipap.pdf
    • https://fulzugaskozpont.hu/files/86369070404.pdf
    • http://pcccphucvinh.com/upload/files/14927999170.pdf
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/8a4aa90b964a477caf37dea1c9242859/fegikugilaxarodesukotej.pdf
    • http://candientuvibra.com/images/file/vowafirerawid.pdf
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/pafikonajinemelelizak.pdf
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b93afc04ed4---vimituvu.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/aqsphub9t66hn7d2j7fi9rm9j3/3273067459.pdf
    • https://dineflon.com//files/nudumatabuwuwigosegalip.pdf
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c75280c55a7---zuwenexubepepomixob.pdf
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ac2b5152a---32437696689.pdf
    • http://bright-inter.com/file_media/file_image/file/92268899377.pdf
    • https://666666.vn/upload/fck/file/feraribubizuzid.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ab2ff3427eb---48398672426.pdf
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd1dc90340---97167740228.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab983199eab---95155745158.pdf
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/918c56d8a004f38dec4e6853f19197a0/vusubomemisuxorime.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_off00013371.bin
d8f222b2dfe47c018d725b2d031b84031517aa0e5d1c55d3a0ca1b54521004a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x13371 11280 bytes
font_01_sfnt_off00014dd9.bin
4fe18be00d9802bc1825d5cd0e8806ecd52d2f27efc28c7748e5448a578e55d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x14DD9 17096 bytes
font_02_sfnt_off00017aa3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x17AA3 16792 bytes