Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2ae2c00cbaee19…

MALICIOUS

PDF

82.6 KB Created: 2021-06-29 05:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fdd42183e0bffa2ed4dfdc735c500a8a SHA-1: 0f9aad4d114861cfc4ccc1d7070169e1b147a36d SHA-256: 8c2ae2c00cbaee19715643cd57741928c08e020beb54f1d02f194ebd4d2af254
196 Risk Score

Malware Insights

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

This PDF document is classified as malicious and exhibits characteristics of an advance-fee scam, luring the user with promises of a lottery prize or parcel delivery. It contains numerous links to external sites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting an attempt to distribute further malicious content or phish for information. The ML classifier strongly flagged this PDF, and ClamAV detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://seventyfirstclassof69.com/clients/60772/File/bipifozigeteli.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bcedd04c0c---wokovifetiramofaj.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4f9cafb50---wowebafizim.pdf
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/3d75906647ed73a463547602c94e7d29/jipopagajagasakakidatiz.pdf
    • http://kco.su/userfiles/file/87725515250.pdf
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b151e75b1---rejexovugus.pdf
    • http://gibson100.com/clients/870224/File/98221616322.pdf
    • https://asset-books.com/userfiles/file/faditijolejamakalunawi.pdf
    • http://generale-bureautique.fr/gdb/files/file/82157345024.pdf
    • http://airconbank.com/upload/fckeditor/file/goximupovixuviji.pdf
    • http://allycatering.com/userfiles/31106971382.pdf
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/fbca155148c86d210f87ddef6f60fe5a/magetariboxifujef.pdf
    • http://alexanderkanevskyartgallery.com/clientMedia/file/kukakimijozid.pdf
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b46a6f140ce---musabez.pdf
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c886caef5ff---64625141072.pdf
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/d01757d38685bc7557bc61507b146e49/tujerar.pdf
    • http://sns-russia.ru/userfiles/file/belerevavusamezewopuda.pdf
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/f88479b189460bcfca3e98f989170b4d/9667368965.pdf
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/c2a30a9a576a1edfc1e15dd00bd69995/34038707576.pdf
    • http://lorichphoto.com/pictures/file/86970331014.pdf
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/f669910f53f1462a773cdafa7120f21d/terufigafamoxedeloniw.pdf
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b595a6ba126---96628458149.pdf
    • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/wojajefisepa.pdf
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/bqhblfd5idurbble5ash2cf85c/10986757283.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=ocean+spa+nails+sippy+downs
    • 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_off0000df94.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF94 16792 bytes
font_01_sfnt_off0000f7ab.bin
4573ca473f0475b3e007ae6c85c8bc64ef15aeb73f90c7f9963d918ce1b03861
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AB 10532 bytes
font_02_sfnt_off00010fd3.bin
3055491c5a69d17365d5fd9aee7997f77db08afe309516b05b6f103e62d5d21d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD3 17316 bytes