Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a30a34a2e3ce8a…

MALICIOUS

PDF

88.3 KB Created: 2021-08-01 16:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 041ebb8b404a4a5063ffd4cf6b826974 SHA-1: 0760f2f1bc2fe390a5e56f68c2c73b14c601019f SHA-256: 30a30a34a2e3ce8a172baa73a1dd12351c76766948f36344b4bc8b287919cc01
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous URLs pointing to various websites, many of which are hosted on compromised CMS uploads or disposable domains. The primary purpose appears to be redirecting users to potentially malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 http://amon-syotengai.com/userfiles/file/82090166682.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c05d204a35c---15457344231.pdf
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ed393e1bd0---kiwulejorege.pdf
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/21896485c28ae0c04f58f9fa08efa327/28761970823.pdf
    • http://naturallabs.de/userfiles/file/2856129835.pdf
    • https://rosewoodcity.org/nbloom/fckuploads/file/vetapowuzamuzomizola.pdf
    • http://dichvu12h.net/userfiles/file/79883139374.pdf
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/a34d11c3786e16e1d4add12f6f1e5b89/74116304621.pdf
    • https://augsburger-dartliga.de/uploads/file/3870359144.pdf
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0ceafe5fd4---lisiwube.pdf
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/q0pqu99v9vimai0kbuofol5ond/pesajamugewogivojixave.pdf
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16075f09c9ce3b---nubarotofirilolepabim.pdf
    • http://firegallery.ru/img/upload/43209773145.pdf
    • http://bakoca.hu/files/file/98555481991.pdf
    • http://goodwynva.com/clients/d/de/de91e19d235d8a3764238851c6b73f99/File/33690039892.pdf
    • http://namuvaldymas.lt/userfiles/file/44858928655.pdf
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160784bd586d83---50173633427.pdf
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/0vhtmop1luqfgtuakv0b7urjca/fexuwuf.pdf
    • https://al-farh-iq.com/upload/userfiles/file/69285697625.pdf
    • http://leton.pl/userfiles/file/dafopejipubobotuzajipud.pdf
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095d4491c65d---xumirodimenigunuwusox.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/06d283bda635a5469d21b4ffa8e5cf0c/wivotubijedijurilozif.pdf
    • http://www.contectrade.hu/fckfiles/file/japemozovaramedevan.pdf
    • http://amirafouad.com/uploaded_files/file/18306359084.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=metric+conversion+practice+worksheet+answer+key
    • 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_off0000f4d3.bin
5033dc9afc707cd862cb54c9d0c53afbbbc22ded7cf99162797627ab884b5878
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D3 10776 bytes
font_01_sfnt_off00010dc0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC0 16792 bytes
font_02_sfnt_off000125d2.bin
2a9ec68742fd6d10ab2520dec560e688b57f99a19ae5b982c9c363cbbfd37d1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x125D2 17084 bytes