Malicious PDF — malware analysis report

Static analysis result for SHA-256 97edaf8363df92a4…

MALICIOUS

PDF

96.3 KB Created: 2021-06-27 02:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7a06485d0ec69973d7149b898263a3a8 SHA-1: a6c6bafad5e605ad24f28afb866e2616b1ff1992 SHA-256: 97edaf8363df92a49b107afaf0eba101f2f6d176f01c722131355cfe3f662e8f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, detecting it as a phishing trojan. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites. These links likely serve as lures for phishing attacks or to distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/3df683e00f65e30fa58f601672c28aa6/larotifab.pdf
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/r7lh759d9q6qb86rgrn50jpini/116132979.pdf
    • http://www.deep2001.com/images/library/File/sisanukamisoti.pdf
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160768bb4ca209---bijonafipo.pdf
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609712722ee91---duniwowolim.pdf
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607394ec0bac8---34774176088.pdf
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c50f51af683---kezurupuxat.pdf
    • https://lederstuehle-shop.de/ckfinder/userfiles/files/74895572563.pdf
    • https://e-fasteners.eu/media/file/wibilolazinol.pdf
    • http://hilimall.ae/uploads/files/57825411437.pdf
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/178b2e12fe45972c116f8938b575ad8d/5552549884.pdf
    • http://phamtrangia.com/upload/files/sijel.pdf
    • http://topas.lt/userfiles/file/kuvukemerineses.pdf
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/74146f31b9323ce1f71c941d03e4f0eb/jafuvamu.pdf
    • http://fewo-spreewald-schoetzigk.de/brandenburgtag/img/editor/file/nojinowibirefeweduz.pdf
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/rk3q864h3csuugipolajbhc4to/99701735593.pdf
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/ead2dr0ebhhdh9q819mb2a67d7/13817694030.pdf
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160be011bc0914---wovegebix.pdf
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/0ba09f2b30ab2539dd5f69dccea5e363/16539289878.pdf
    • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/18033187598.pdf
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/b3eea4988d34d90e2f17d26c1e41f4ec/69910667330.pdf
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/dee0c8f1d71fbc59ac7b73e691f406c8/66997086253.pdf
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/54d1d9687d38101db95bb478bb6ad9fe/maluz.pdf
    • http://triatlonbizuterie.cz/sites/default/files/file/fuvedove.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+get+weakness+potion+in+minecraft
    • 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_off0001132e.bin
8b43bfae6e9a80e39416d55c42ef6d5dfe52977360e7628bcdda0358309b81bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x1132E 17476 bytes
font_01_sfnt_off000140d1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x140D1 16792 bytes
font_02_sfnt_off000158e8.bin
5cad09ad2dbf462323f52c394e37db197e3965e4a66dade4e944d5eb894e67a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x158E8 10948 bytes