Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a8a3a673be39c96…

MALICIOUS

PDF

80.2 KB Created: 2021-08-23 20:23:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bd88d637ffac2e16bbf97ccc076c2c42 SHA-1: 618e0ccccbfe1b7c9dd64d5822abc155c4cbd746 SHA-256: 9a8a3a673be39c96bfdf48f500faba8aedc14ed11b667a9c3b812dc4d8d102f2
196 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics as malicious, including an ML classifier and ClamAV, and exhibits characteristics of an advance-fee scam lure. It contains numerous links to potentially compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content or phishing sites. No scripts were extracted, but the document's structure and heuristics strongly indicate a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://hncastlecable.com/d/files/jevamakabafavanitipoz.pdf
    • http://seednseed.com/admin/fckfiles/file/31154202376.pdf
    • http://asupuro.com/user_data/image//file/17351782676.pdf
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1610cc5de84212---kokozifotapijivadu.pdf
    • https://xuantruongtech.com/images/ckeditor/files/wubewubovumebuvawa.pdf
    • http://shs1977reunion.com/clients/41590/File/zoruruwafimis.pdf
    • http://akcjonariusz.com/UserFiles/file/somodabemexajiv.pdf
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160749f58bfeb5---sexunipetumedebojujobumux.pdf
    • http://ordinate-ltd.com/file_media/file_image/file/54793302735.pdf
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/1ab96a9b812d6efb6f609f7d6b900661/sokugex.pdf
    • https://tavio.ru/files/file/nonovevak.pdf
    • https://incasur.org/temp//files/18745235440.pdf
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080e48d472b7---30521664158.pdf
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/389f2a1ebb0df2b7619e2eeb54f6b2fb/18795803619.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16095477a7842b---diletewodoj.pdf
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1611590c193d69---27489726316.pdf
    • https://cuisinescartier.ca/upload/editor/file/rasulazi.pdf
    • http://dtcguild.org/clients/80367/File/80539473233.pdf
    • http://dianacb.cz/userfiles/file/fatuxidupex.pdf
    • http://aj-logistics.com/stock/userfiles/file/wogojakaloxuwetizijavuf.pdf
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/s112a7hags4rk2uhivei6rrhr1/361693737.pdf
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/4ba86c1bf7773107dd0764a65d15ad6d/kosuvarepinetu.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=master+airway+bill+meaning
    • 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_off0000da23.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA23 16792 bytes
font_01_sfnt_off0000f23a.bin
0ac80ccb805692480cac7447c30115097b6edd24f94df44efb7ae3d79910d4f1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF23A 10664 bytes
font_02_sfnt_off00010ab8.bin
457c0f1bc3d45f4386d42ef729165a4324e7b67faa0a16a850d0a336e0bc9680
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB8 15848 bytes