Malicious PDF — malware analysis report

Static analysis result for SHA-256 02365746362409cf…

MALICIOUS

PDF

82.6 KB Created: 2021-08-04 08:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5e10274a7485aa63f167b53be9af0849 SHA-1: 9f4dea807f3ea47a82a1dadf18c607488757104b SHA-256: 02365746362409cf8ac7e30bda7f016c934070efd2b45a681e69597a685d6996
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to potentially compromised WordPress upload storage and other disposable hosting, indicating a link farm designed to host malicious files. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading malware via these links. No scripts were extracted, but the structure and URL findings are highly indicative of a phishing or malware distribution lure.

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://shqinze.net/admin/upimg/file///91555929716.pdf
    • https://ludifrance.fr/userfiles/file/sewodowugolinizuw.pdf
    • http://mondoacquapiscine.com/userfiles/files/15380738624.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/s6jc7ipikqkoaoedq0kpuf8lq4/63094210645.pdf
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16089de872cefb---neroraxakakoji.pdf
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b27ddb77fac---sumutebeleriw.pdf
    • http://innotec-industrie.be/userfiles/file/burapolaze.pdf
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b000bb32aa---pidozelugamipujupeganirel.pdf
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abaf3001898---xabuvuwizuligoko.pdf
    • http://amctop.com/board_data/editor_img/file/202105131600.pdf
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/lqvp60itne0jllm46mcveqp86b/5314857112.pdf
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/592653f4b052d376dd6c549497460618/kumisiruki.pdf
    • https://tckontrola.hr/files/wodazoxeririwoxitimeduf.pdf
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607ce3c448650---41570150326.pdf
    • http://ck-tct.ru/userfiles/file/94648783731.pdf
    • https://avela.md/userfiles/file/genosikapototifama.pdf
    • http://xn----otbb6ahq3d.xn--p1ai/ckfinder/userfiles/files/41614503687.pdf
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/bcae5103cef88b0fc2b578b529081184/3793404987.pdf
    • http://webursitet.org/Files/file/loduzoworazevar.pdf
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/8odph5jlg073vfgbgj5c328vjp/fonalimetapojam.pdf
    • https://tasivn.com/upload/ck/files/63188920458.pdf
    • http://goraku-sangyo.com/userfiles/file/96351196821.pdf
    • http://asfalon.com/__files/file/35337186342.pdf
    • http://architettogherardi.eu/userfiles/files/womamojenatoto.pdf
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/79ace48cd5ddb63fbb4e77acdc681b30/temotafipaveseluxalunas.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=shiv+bhajan+mp4+free+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_off0000df04.bin
99574e23ee78bcf3a3db0a0065adeee79aafe425654260f374cc9e8cae9557af
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF04 17084 bytes
font_01_sfnt_off00010bb5.bin
c53dc96c3fb451452f04cc4895faa6772e5e6085a1672f90c3ecba8a6317383d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB5 11072 bytes
font_02_sfnt_off0001251e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1251E 16792 bytes