Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f510e55001d5b1d…

MALICIOUS

PDF

84.5 KB Created: 2021-07-19 03:41:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: abe1e5624047493dec8dbfaa8d8610b2 SHA-1: f0ae2758fd549a4592533c4f038128b02e14e8a8 SHA-256: 8f510e55001d5b1d4b8af858d3e1389c4b7c6ba729ecff79a88fbd1af2841381
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious and exhibits characteristics of an advance-fee scam, likely involving fake lottery winnings or parcel deliveries. The document contains numerous links to potentially compromised websites, many of which host PDF files, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the presence of external URIs and the overall structure strongly indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • 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://cableesmaltado.com/d/files/41295401439.pdf
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcba448176---sevite.pdf
    • http://bawaconstructions.com/editorData/file/36351530949.pdf
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/iu80p8glci8coomebkgdoe3nn6/67477730472.pdf
    • http://glenbrooksouth1970.com/clients/1/17/17fc1bd13d5538a69f39d58c869d2fc5/File/40632040214.pdf
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/7155c280eb1c6cedd49f6fb1ea06484a/92028450565.pdf
    • http://tulsamemorialclassof71.com/clients/84987/File/59974557100.pdf
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16079a3be200ce---fobegowo.pdf
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/aumvlc7r1vls7sogoa0g04hrb5/83701758990.pdf
    • http://giprozdraw.ru/ckfinder/userfiles/files/fesetejed.pdf
    • http://dichvutheapec.com/upload/FCK/file/10699131658.pdf
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160791aa680640---lemetegazumikidopivize.pdf
    • https://egokituz.org/files/galeria/files/muxudanija.pdf
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a204d769e3f---44245803928.pdf
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/6bb4de9a675ae443c0ac1f4190d03a6a/weturosirekowuvorubi.pdf
    • http://playfromhome.org/clients/4/49/49939bf6a151252ba1adfe53d1befa29/File/15023926464.pdf
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/042159a815909213a1ece19c8e155449/62208652901.pdf
    • http://aplus.to/userfiles/file/xaxekugoledufuveziza.pdf
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160779b2d8d95b---25312774284.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090b6c37cee9---60627315749.pdf
    • http://sns.hu/_user/file/lekuzoturerit.pdf
    • http://pnmanagementsolutions.in/uploads/diwuzopotuwuboxoxijix.pdf
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/1477b59febc0e031f513f2e7b6e389c4/jokozemejinulapafoli.pdf
    • https://elpollopaulino.com/cenavarra_userfiles/files/pidezasolivitezogi.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=the+central+problem+of+economics+is
    • 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_off0000e9e9.bin
d590da69e9a4a8a2c231c54b29faee828329f10b79109b4669843a4f17bdc349
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E9 10848 bytes
font_01_sfnt_off00010280.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10280 16792 bytes
font_02_sfnt_off00011a92.bin
c06c5c333a09cc7c258c2c871c9eee800a79697478a448884789f94ba50b8524
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A92 16412 bytes