Malicious PDF — malware analysis report

Static analysis result for SHA-256 64601863220987fe…

MALICIOUS

PDF

87.3 KB Created: 2021-06-26 07:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3eb7249dff9cd9b9c6851523c88adee3 SHA-1: a0aa85d33e2775f1bf2ae9baa11cc50d4713a3db SHA-256: 64601863220987fe3f2ee8e99e7383ee01064c8b1efb311c1e11245f245e6b07
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of an advance-fee scam, presenting itself as a lure for lottery winnings or parcel delivery. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm, suggesting an attempt to direct users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://gorisum.net/fckeditor/upload_file/file/figavakebaxadafa.pdf
    • https://fzclicks.com/demo/files/editor/file/walajopane.pdf
    • http://www.huntsvillepr.com/files/files/2914332415.pdf
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/8g2uclpfkve2bj3k7dc2tgj4m4/21249446016.pdf
    • http://prattsofdouds.com/clients/d/d8/d85aab9f4bcbae69c8358f7a9990a0b1/File/duzewateborigowuk.pdf
    • http://iaestedresden.de/userfiles/file/gawenavafax.pdf
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16098c0e66b292---64288521857.pdf
    • http://01host.ru/userfiles/files/1554544363.pdf
    • https://alshamiltrading.com/alshamilfiles/file/47251270545.pdf
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/a1f1ced02902e938833a219c481cd872/sobumanuvejujerewanovoze.pdf
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ad7bc43c599---ligavudijagasibizetes.pdf
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0c40717ca---foxatogapusakonazigidexut.pdf
    • http://usmleworkout.com/files/file/gilasejopozafa.pdf
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/j0te0tch3596p0emlebioel4ni/sigoxopezuleri.pdf
    • http://allamericannursing.com/userfiles/file/pakesizelibivedubikamax.pdf
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/21a495557c9061bd5ab3f4b095a60800/62738349701.pdf
    • https://psiakocky-potisk.cz/webpagebuilder/ckfinder/userfiles/files/fomezikuwal.pdf
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5ddf97861---digizekezekes.pdf
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c5200c99dc7---jigiwize.pdf
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e507429af---49988522657.pdf
    • https://divinenine.net/userfiles/file/wekeguta.pdf
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608531cc0d85a---70101615740.pdf
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b894770497b---10119122652.pdf
    • http://adamslakeband.org/userfiles/file/40736925498.pdf
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609655de8ac36---12738884566.pdf
    • https://boumqueur-edition.com/upload/fckeditor/file/xibozadodafunazokofefani.pdf
    • http://agiusfuneraldirectors.com/files/file/832312910.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+write+an+essay+in+chicago+style
    • 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_off0000f47f.bin
9c761924906532914b83bd4561e5166cfa5c2bea29488e7ca014511d8c3ea052
pdf-font-stream PDF embedded font (sfnt) at offset 0xF47F 16408 bytes
font_01_sfnt_off00011ece.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECE 16792 bytes
font_02_sfnt_off000136e5.bin
708dbde147a9a7b61f3f6c14e5d7f093d22c37e466b7f18a69c7ea5722291600
pdf-font-stream PDF embedded font (sfnt) at offset 0x136E5 10700 bytes