Malicious PDF — malware analysis report

Static analysis result for SHA-256 148c463e257d3793…

MALICIOUS

PDF

90.4 KB Created: 2021-07-20 14:55:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6d9857068fe478001175c2ca3db93d4d SHA-1: 302fb2dfcc96ec5bef1480bd90bfc2c4a605db4d SHA-256: 148c463e257d37933559f38afe3fe6b6a2b28e35fef6312c6dd995218d8f6bea
204 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of an advance-fee scam or fake invoice lure. It contains numerous links to external PDFs hosted on compromised WordPress sites, suggesting a phishing or malware distribution attempt. The document's structure and embedded links strongly indicate it is designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e58db6f66---wetugil.pdf In PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/lj2241kg4cimbhsovmpr8elec2/berozuterigumanifabumo.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/gotudonafi.pdfIn PDF document text
    • http://mid-europe-ex.com/31991399410.pdfIn PDF document text
    • http://www.dramayaramendes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075a50af1a1f---fukiposizuvozex.pdfIn PDF document text
    • http://vanphongphamhienluong.com/upload/files/34909143409.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160c482b2f2651---lujatetuzibu.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160acb087ef944---kigivazatamikomarok.pdfIn PDF document text
    • https://handientu.vn/userfiles/file/2801049746.pdfIn PDF document text
    • http://eshop-kocicinadeje.cz/files/file/sukorapekuwapadoxosegow.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/c61b791663898d61058db0a6d5c8de4f/24972238171.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/16076025ee7bad---32406822624.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609b55771bcc8---dejenin.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/80469019192.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7b92e9ba47---95774154701.pdfIn PDF document text
    • http://fosterfreezesantarosa.com/uploads/files/60048847627.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfc1819af8---likajijonefebenina.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/naqph5jl4ljc768p29hhbdev5j/wejinakilifi.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16077cd8e4cad2---zeletelukevix.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/wuvexojewerevakum.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/i7cta8r096p50bmgis3r46ah37/furalafiguvu.pdfIn PDF document text
    • http://boathousebrokerage.com/userfiles/file/21734560611.pdfIn PDF document text
    • http://7166867.ru/ckfinder/userfiles/files/31243550042.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609d2f4f06877---52665601992.pdfIn PDF document text
    • https://sieuviet.net/webroot/img/files/xorebujujekulijesufolijej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=parties+in+privityPDF 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_off0000fe99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE99 10260 bytes
SHA-256: 3e7586814c87557ad7c3cf0fb6c6d305114a59c4e9cca4a34732a3d9036faccd
font_01_sfnt_off000115cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115CC 17784 bytes
SHA-256: e9a475ae1e336078c41ec9deb26b4f26a4c6437c06d7fcd57936ad215f888d6c
font_02_sfnt_off000144b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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