Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e8a2fe4dd6a4b6b…

MALICIOUS

PDF

89.5 KB Created: 2021-07-02 15:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 414c509a8a7d170629d9d245c806fbed SHA-1: 9aa2617fe9c99b8c12fd71183d4899ec391dec6d SHA-256: 1e8a2fe4dd6a4b6bb7938c7c4678db7dc252273171c8aff6107a968cef189cfa
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution scheme. The PDF structure itself is a link farm, designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/op3benlj3rdmbagijhomuv44nn/xunuloxezumubupepulujon.pdf
    • http://elijasprojekts.lv/files/file/4217177666.pdf
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f4bda0438---48205938625.pdf
    • http://medob.org/SITE/files/editor/file/repekajim.pdf
    • http://physocare.com/Images_upload/files/sapedul.pdf
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca034c9959d---kuzekowawadikibe.pdf
    • https://contabil-fiscal.ro/mm/file/3849072882.pdf
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf2f59265d---82432481081.pdf
    • https://zegabilisim.com/calisma2/files/uploads/dedexogun.pdf
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16087b47ac4288---25683863177.pdf
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/5c58265696b913036d36cbdc3a197ba6/56733014785.pdf
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/eogitil7vd7b429pm56gr714e1/59346478286.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099a736c53f1---vaxigimexibuxawowom.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2r04eu0f2rmhs56vepm3d2t1i2/52212222088.pdf
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a61b5e245b---92494353347.pdf
    • http://fine-cottage.ru/userfiles/file/25737328244.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc4ca85d5c---vujegusuf.pdf
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160909f8d9dd72---werifegupagosav.pdf
    • http://dokumsuzgec.com/userfiles/files/fovesiwinakakowisuneg.pdf
    • https://argumentua.com/i/file/vijujaju.pdf
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa45b00664---sebelekozarav.pdf
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/55408c5dd781c648335b0ac9713da902/golobafagunofefes.pdf
    • http://hurtmar.pl/Upload/file/gajok.pdf
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/0369021fe01b98830d21182cc39cd749/gedutilarilu.pdf
    • https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/1cb166903be3996b9ef123bc7ac1deb8/bibijesomijojelegurulux.pdf
    • http://taskentcompany.com/userfiles/file/12402806072.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=viswasam+theme+music+mp3+download
    • 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_off0000f9a2.bin
b970c0ac619efcaa0ac3a9cae97770fc7cbf891cfc88965302daca7330606b28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A2 11004 bytes
font_01_sfnt_off0001131b.bin
d07ecf830b8a508b7a2cc825d85598e09553a57ba8ad925c1fe3a91df0f35fb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1131B 16744 bytes
font_02_sfnt_off00013ecc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13ECC 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.