Malicious PDF — malware analysis report

Static analysis result for SHA-256 66ba0974c70ed111…

MALICIOUS

PDF

81.8 KB Created: 2021-07-01 14:34:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e20c622dfbca7cd485d90a442f945ed1 SHA-1: 689f0c7789777cf9bcb8e94e2d4fc5af6c6b33b3 SHA-256: 66ba0974c70ed11196c786bd49e4445e9e694351c8704f15bf229ea2f51d94e5
196 Risk Score

Malware Insights

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

The sample was identified as malicious by ClamAV and an ML classifier, and heuristics indicate it is an advance-fee scam lure. The document contains multiple links to external websites, likely intended to direct the user to a phishing or scam page. No scripts were extracted, but the presence of numerous links and the scam lure strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://mispuntossaga.com/campannas/file/gatipusizodemaxuvuxem.pdf
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/7b671b32e5163eb7eeda9f3668ac86c0/tosogep.pdf
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160828973e4331---mesiv.pdf
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b3dd97aa589---48983358874.pdf
    • http://abacusnancy.com/userfiles/file/busijimebox.pdf
    • http://dichvu12h.net/userfiles/file/bigudemuguwusugariko.pdf
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2ecee3f35---67185797193.pdf
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094d3a200ba2---pexomegaw.pdf
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/f0e6ikqivqj8e69cpaerm5ggra/fabilivepuvasepivukim.pdf
    • http://izdepskifamily.com/clients/1/1a/1adacdf247316bc4617b3617d965acc7/File/fusepunikonozanonejenuv.pdf
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/265c872cd46247c7a44938784ca59003/99125227562.pdf
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/3be001e0bb197603fd00873657a9e8bb/papase.pdf
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/49b1f9cd76c7e58266a87ffa61b56372/82304251236.pdf
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/b978dda9098f27cffbc18ff7202b0933/wirubaneti.pdf
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079616c0eb74---85339071072.pdf
    • http://seibyou-koujien.com/files/files/siwepifusepowuxorugudowu.pdf
    • https://isosklo.cz./uploads/ruwuvivuwurozarevifa.pdf
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/l1qc69b21hcnkohu0j7vn2gj73/vaxovakalowureb.pdf
    • http://corporacionnoa.com/UserFiles/file/96117786886.pdf
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609670883e1fd---bogosedupozojofesud.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=kellys+bar+and+grill
    • 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_off0000dc9d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9D 16792 bytes
font_01_sfnt_off0000f4af.bin
3c2c7a684d7587333bee48d21186cc91f22dc1a26a0e6492325e784c40cfe791
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AF 17636 bytes
font_02_sfnt_off0001228e.bin
e11e0e21855cfb8d3d4783c632d94521809b4cdd46e6a72cca974aeac4e53c6d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1228E 10452 bytes