Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeca291e1bdf6c13…

MALICIOUS

PDF

94.0 KB Created: 2021-08-15 03:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 906a385cc3ccb3f24747a3bf09509981 SHA-1: cf69a38d94502c3639e64b70355e7a0c7d04def4 SHA-256: eeca291e1bdf6c13ef2dffb0cbaeb09388a2bedc4c30cc62ca55b6be366f4fd6
196 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML models and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to external PDF files hosted on compromised or disposable domains, likely serving as a link farm to distribute the scam content. The document's structure and heuristic firings strongly indicate a phishing or fraud attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608091971b48b---52531843279.pdf In PDF document text
    • http://accronline.com/userfiles/file/98313402316.pdfIn PDF document text
    • http://phuwangnam.com/user_file/file/wesulabetutidebipub.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5cc9e16922---52251135771.pdfIn PDF document text
    • http://drjoecarver.com/clients/49355/File/86015788162.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1cb84f477---57889642018.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1610e0f5e96759---sidakidizu.pdfIn PDF document text
    • http://staropolski.net/Upload/file/52442277073.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c171a73a1dd---70630721207.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161141d73b72ef---dawoxuk.pdfIn PDF document text
    • http://bigyikesmedia.com/home/xtremweb/public_html/consultinstitute/web/upload/files/56300616137.pdfIn PDF document text
    • https://tl-systems.hu/files/files/55737478297.pdfIn PDF document text
    • http://rowerowaszkola.pl/imgturysta/files/69847957163.pdfIn PDF document text
    • https://free-spirit-city.eu/uploads/wysiwyg/files/kuxotixawuroziwomijirizad.pdfIn PDF document text
    • http://charugarware.com/DEVELOPMENT/charu_garware/uploaded/userfiles/file/6398449139.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/d12e61b4e6763969c63893a56b9ceba0/pekilefefaboxezobak.pdfIn PDF document text
    • https://renebeumer.nl/userfiles/file/kiduxaberuvux.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/xupovaz.pdfIn PDF document text
    • http://ibconsulting.it/userfiles/files/jawavumumokevo.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/75bfdf2c85d78a1796920b7f42b07702/gamazatid.pdfIn PDF document text
    • http://mgocsm.in/userfiles/file/tananivumufolo.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/g91q3k48kut3dqer8686up8iu6/92501472581.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/b9ad579fb8ddc281513b4d2efbf123ca/dapuw.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/4qd0a7pukspcggi4lshhc4jt2m/luvalewesesaremamiw.pdfIn PDF document text
    • http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16086e9a15ab0e---xemodixaxufupemavolajaz.pdfIn PDF document text
    • https://godparents4tz.org/home/god/public_html/ckfinder/userfiles/files/ruvifarimabowisuxaxi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=2005+acura+tsx+manual+transmission+for+salePDF 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_off00010aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000122b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122B3 17364 bytes
SHA-256: 3eb753430f818c7c9d2e9dba97de564d2ae1092e40ca3e12a03328489522d83a
font_02_sfnt_off0001501b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1501B 10976 bytes
SHA-256: 977ef13f69a4b7d4bc68dfbd5a4df4320b600fe6f85afd2580e492792a178120