Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e723e66d731b0d…

MALICIOUS

PDF

105.0 KB Created: 2021-09-24 03:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 966b3d50209a9f8a80e0e2b776b15f05 SHA-1: 42c7791599577e57a73d5f00a7cb85e63cb90403 SHA-256: 02e723e66d731b0d8c9ec021ddb36f0e1105b277f9064f80332fe8a9bec1b541
136 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to compromised CMS upload storage or disposable hosting, indicative of a link farm designed for SEO manipulation and phishing. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly suggests the document's content is intended to defraud users by promising prizes or funds requiring upfront payment. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 6

  • 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 https://drafthe.ru/uplcv?utm_term=fifty+shades+of+grey+movie+watch+online
    • http://alrehabourhome.com/userfiles/files/fawazofutofizetada.pdf
    • https://fishuntpesca.it/file/48315434164.pdf
    • http://hk-sai.com/ckfinder/userfiles/files/85003808414.pdf
    • http://dalieuht.com/app/webroot/uploads/files/73260734101.pdf
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/03bd04d226954843a7be25ea10632abb/lopurutirofe.pdf
    • http://elsekmont.eu/userfiles/file/15208310964.pdf
    • http://stadion-zarya.ru/ckfinder/userfiles/files/dizifudida.pdf
    • http://morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614c512242dce---13755872487.pdf
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f3fd38cb01---68516285727.pdf
    • https://mamalight.net/business_school/uploads/file/gidaral.pdf
    • https://taichielite.com/louis/taichi/ckfinder/userfiles/files/dikanididutazadi.pdf
    • http://enovosti.info/ckfinder/userfiles/files/58943900911.pdf
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613fd7fca2723---86667005579.pdf
    • http://hla.vn/upload/files/32156039593.pdf
    • http://interface-referencement.com/userfiles/file/josojipukazipinopev.pdf
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/cb5cf24f06e6be837d429b0d311df107/judum.pdf
    • http://yongqingtech.com/d/files/45388926707.pdf
    • http://www.awakohchang.com/image/upload/File/utabu.pdf
    • https://marblo.ph/app/webroot/img/files/67687394128.pdf
    • http://gewidor-gmbh.de/uploads/files/xazolew.pdf
    • https://aromamarketing.md/img/files/71057774290.pdf
    • http://teamhead.net/userfiles/file/23398580592.pdf
    • 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_off00012f72.bin
e7ca105c409e6c19ffbf47267136fa821bbe28281709c7c0add8ad0e536dd285
pdf-font-stream PDF embedded font (sfnt) at offset 0x12F72 19952 bytes
font_01_sfnt_off0001642b.bin
b2a2e05dc717c6bb104a2e742f2e28ecade74d6f2a152627ff185842e91dbc4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1642B 11164 bytes
font_02_sfnt_off00017df0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x17DF0 16792 bytes