Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d342326533a948…

MALICIOUS

PDF

83.3 KB Created: 2021-06-26 01:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bdeb7381c50b17933c945bd868a0004a SHA-1: 60dad466d99aee06015d5bda1190f86a0db79370 SHA-256: 36d342326533a94875e9a4fb200b988c2b1ae711ac7617072554846952e2a8a6
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous URLs pointing to compromised WordPress sites, likely for redirecting users. The presence of external URIs and compromised CMS upload links suggests an attempt to distribute malicious content or lead users to phishing sites.

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 http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/6e91ba0561da9b86cbfeda3610dff174/88696777510.pdf
    • https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/51p76n112ihof1q9162o2b6df1/82386092356.pdf
    • https://dolaodong.com/userfiles/file/73142143914.pdf
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160cca0b1c8161---sikeroz.pdf
    • http://yilip.net/userData/board/file/dulakuritanute.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b05cea48edf---69577156679.pdf
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/363a2b1c028af8a98b1c12b9f33ff7bc/59426279557.pdf
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8dd1c0f1b7---53946894673.pdf
    • http://imssp.by/data/images/fxeditor/file/nokesididaratekuso.pdf
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/087991b0e3bc08f1bc83124b6c64d083/83870621240.pdf
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a6cbc719d1b---90489918825.pdf
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b1917246530---sizeno.pdf
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160d29fab08a44---36463251933.pdf
    • http://mywayrtk.info/userfiles/file/dijivaxegada.pdf
    • http://globaltruthmediagroup.com/clients/a/aa/aa8380eac451876ae6ab993bf3a720d6/File/10901542128.pdf
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/45da597e3c15286815f852485b9c1c76/8346234666.pdf
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b167ff5133f---17958998006.pdf
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8241ebf0f---69943761211.pdf
    • http://teplospectr.ru/images/files/78344973605.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16078ae34329c2---66989846326.pdf
    • http://www.abcklima.hu//data/editorfile/fexuvupupetola.pdf
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c97c35c0d---kakuwuxubutisulu.pdf
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/meqjd1m77u3u9u8s6j2b0j5ecr/wejejimolobofesozasipo.pdf
    • https://advance-pack.com/editor_upload/file/zewiwexofebipezewodili.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=cookie+clicker+heavenly+chips
    • 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_off0000e2c8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C8 16792 bytes
font_01_sfnt_off0000fadf.bin
67dea23fc32dc602fa612307ad1853b7d646dd08cf17fcf182e124acb0093877		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFADF 10676 bytes
font_02_sfnt_off00011354.bin
4ee0914d0ad8b85867c45fa7d21f7dfffdc77fdd11578e39b7c1ada80cfff835		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11354 17048 bytes

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