Malicious PDF — malware analysis report

Static analysis result for SHA-256 70202fa49ea7c38e…

MALICIOUS

PDF

94.4 KB Created: 2021-06-28 18:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1f9dc70e9dcf9da7713de69ab98d3232 SHA-1: 8c9722d2aeb8c713f2ebf4fb2f4493797f301cde SHA-256: 70202fa49ea7c38ea0b9b6f7b202d08f02072a0bf2ce90336f7983debc853a5d
156 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/6c18bfdc8084b9344e53054db900d115/batexiwopo.pdf
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9289b5abd4---pisisalesogupafitutilij.pdf
    • http://446888.top/userfiles/file/70716769483.pdf
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160871f6f0d887---55590842747.pdf
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a360e4c9c42---21644067167.pdf
    • http://srlamn.com/clients/0/00/00e84243199fd86ca7c15d66a0237eb0/File/29058238626.pdf
    • http://aurora-c.jp/files/files/wibirulegir.pdf
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079f32220c4a---15515489309.pdf
    • http://podlahypilat.cz/admin/file/fakujilikozima.pdf
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbb77825c3---fanojelesolejewuvoxasorum.pdf
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b67e8fd89ff---17881748452.pdf
    • http://limoride.net/gallery/file/62694959810.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/k64l83timgi4uc3bfs2cvl6b56/58101150748.pdf
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/fb3d8905282f8678d1f6fe58dc047f59/depanawojun.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/1e8e9180db87616e88389229ca220621/mixusajuvesazesonava.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b1bb89238---86930404371.pdf
    • http://yjsyrj.com/userfiles/file/48504486537.pdf
    • http://lagunaapartman.hu/images/user/file/veregal.pdf
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16079fc7de6f5d---82761572922.pdf
    • http://hysansam.com/fckeditor/userfiles/image/tawasatezisofoxake.pdf
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/9f0f69d6e3d2eab6f0ce8697a62e2298/83027608920.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=idle+games+unblocked+hacked
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f040.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF040 16792 bytes
font_01_sfnt_off00010857.bin
18337eb544e60c570e48e8341bdc52938bb30b05f0b38f45f0d5a3adc6956bfa
pdf-font-stream PDF embedded font (sfnt) at offset 0x10857 10808 bytes
font_02_sfnt_off000120d6.bin
84aedee7d5762653d365f0136227a73beef431a5204b36965686a699cf054118
pdf-font-stream PDF embedded font (sfnt) at offset 0x120D6 20020 bytes
font_03_sfnt_off000154af.bin
bc2459664477023eed022a1339b9fabe70d9a1179fe1586e953c300b39e207b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x154AF 6136 bytes