Malicious PDF — malware analysis report

Static analysis result for SHA-256 3232ead85ba077fb…

MALICIOUS

PDF

85.5 KB Created: 2021-07-05 21:25:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 99f5ed2a1143ea9a28baf759175edbe2 SHA-1: 6c234bdfe29fc887ed97c2f5741520051ed69381 SHA-256: 3232ead85ba077fb891a41228310bf47505c7c6a68fca8ead1ead1cc2e20efd9
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal that the PDF contains numerous links pointing to compromised websites, specifically WordPress installations, suggesting a phishing or malware distribution lure. The presence of external URIs and links to IP addresses further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://blessingsngo.in/userfiles/files/42831607599.pdf In PDF document text
    • http://eventcompany.org/clients/e/e3/e30ef11cf4efe639fe6592aa37b9cb94/File/gamam.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b6875890e1---lamufurudenizanudoronizuv.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160916c04e309b---fukuxademof.pdfIn PDF document text
    • http://rentaruedas.com/files/others/masolexapegusufowom.pdfIn PDF document text
    • http://roycraft.ca/userfiles/file/41949146563.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/a42v9mmd7n0kmvjj56vg91cfc7/bomirudosibonifukiwudu.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/91e5db97537565251b203aec9a3c1e29/49989474076.pdfIn PDF document text
    • https://nbcmedia.vn/ckfinder/userfiles/files/52475167851.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/217138cc298c731f58e8071e2f2c56b4/nevefuvirupiralusasi.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071089033b62---42524567110.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609053c557a81---golewizasoxipobefat.pdfPDF link annotation
    • http://asiadomainstore.com/userfiles/file/xizixovagenurezaret.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160ae28a947b0c---relagadiro.pdfIn PDF document text
    • https://workinhotel.com/upload/fckfile/fuwizoburanuvekekup.pdfIn PDF document text
    • https://masihpt1.com/contents//files/fiboziludasek.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/6374ffafe79b2c510d9a8db05f84f37a/lozapifazowirutinobixozi.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/fad1f1df3927804f511bb40fc660c2f1/39459779400.pdfIn PDF document text
    • http://kevinmcallisterlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/27443948498.pdfIn PDF document text
    • http://shreyaghoshal.com/konadnew/userfiles/file/2783616421.pdfIn PDF document text
    • http://nhuaduongnhapkhauaz.org/upload/files/7340366937.pdfIn PDF document text
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/9sq85l6q1fif8eidf9dkf0ei3n/38299154236.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/9e795bde7fb1686bc3d26238e91e0b5a/98156768523.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/e60314e5c437af594b54c21129eb5d47/nuwiw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=synthetic+cubism+paintingsPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ead4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000102e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E6 17132 bytes
SHA-256: 325227599227c17010434854c0d266d9bdd597609e785d6c3bae04308e4eee94
font_02_sfnt_off00012fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FCF 10984 bytes
SHA-256: 9f1178632d291e46529bc754e517c8262d3924f358e9f4f4d867ee9d72b564b8

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