Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a7ed76448ee1ed…

MALICIOUS

PDF

86.2 KB Created: 2021-06-27 21:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7b2e7765e125ff21f11cc56581079c60 SHA-1: 1d0387fb93c64c2e75f22e47e8bdd1b28dbd65dd SHA-256: e0a7ed76448ee1edb0c6deaa4aec0f0a86e11ea504e24f237e376b79281d2e2d
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The document contains numerous links to external sites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users. The presence of embedded URLs and the overall structure point towards an attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://podereilmontaleo.it/writable/public/userfiles/file/bevupukozi.pdf
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/c41a64908e63f23b99c403e553ced16f/88020460920.pdf
    • http://edanieltour.com/FileData/ckfinder/files/20210625_A70AB7BF4DD49306.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160995180ccc58---48007661245.pdf
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1320ae5a54---82142477500.pdf
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/bc6cc6c0d01d40b22a2d13a31f068d1e/xedibi.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/0dv415b77721hde32thnekfsnn/2610188984.pdf
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609f6dd2800d5---vasaxirutarusejiloxofo.pdf
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/ddd531721a8f8d0c67b2dccd9d535506/zokefegugexerurago.pdf
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1607601180ae73---puniwizuduwasaw.pdf
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0b63778017---2114789701.pdf
    • http://pvvc.cz/files/kunuludimusafudoredotomu.pdf
    • https://creteservices.com/FCKeditor/userimages/file/tupakamanuli.pdf
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/5a341e8ea220bcab56f91c17a309a5b3/81995064041.pdf
    • http://cwesp.biz/upload/file/vulikutozitezukatonudekof.pdf
    • https://bangvetthuong.com/luutru/files/tibitolibipabegus.pdf
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160a694af6c5e9---fuwizuzowosivuram.pdf
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/173kftr8eb49h1jlslo7ojkdtq/57716536257.pdf
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/f72a66a2ecc481ac4adee682f670a98c/voliruk.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/ectei7rjl6ov0d3mgkispd0p94/70100551912.pdf
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/fcc21165f58b419e6fffac97b9b4e088/41897773905.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=pmp+application+experience+sample
    • 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_off0000ec54.bin
df6f4ea09b8d7d843cdafff936a07d10093ae5d520317dbdc80b1c4394d7ae4b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC54 10640 bytes
font_01_sfnt_off000104ae.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x104AE 16792 bytes
font_02_sfnt_off00011cc0.bin
5cd1aed77f04b8a2b766694cb7040aeccd29a2e44c6b388af36bc683087a42b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x11CC0 18084 bytes