Malicious PDF — malware analysis report

Static analysis result for SHA-256 3378bfb4222caadf…

MALICIOUS

PDF

94.4 KB Created: 2021-06-23 16:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ccc7f9be967e730de6c2133071bd368 SHA-1: dce2493bde8536b9371ca76bcdc316b1d435df7a SHA-256: 3378bfb4222caadf1bd19d0af58c3428d9e616e82f0b827d6517d49a461ccc30
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to compromised websites and upload directories, suggesting it functions as a downloader or redirector for malicious content, possibly related to game mods as indicated by the URL parameters. The presence of a visual download button further supports a phishing or scamming lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 https://infrive.ru/uplcv?utm_term=rocket+league+mod+apk
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/c3928248f64d2c3b5ffe7909229f3017/57165327550.pdf
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/qh338r4hjruo2m1j4s0pie9eo2/71967601748.pdf
    • https://haltia.mx/sii/ckfinder/userfiles/files/xitevuwe.pdf
    • http://caf-ljubljana.si/docs/bexadegimemedevugimakik.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/5e45859367604b6426af11fc816ce420/lumuvewadabijasiwir.pdf
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd3ba942e4---71778672369.pdf
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b86f25ad866---bujubemo.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be2251046c9---filegezuzusal.pdf
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084e1c7b5d83---zulekudevesoxavisogapat.pdf
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f500276e2d---32930782708.pdf
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16080b5fdae4fb---muxosujidusutezikimorome.pdf
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cc4fcd3a30a---98096423755.pdf
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/014fb732e918a3810cf43d5d9ea0ff1e/doxumene.pdf
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/45bcf24d1052d6cc0fcb316c7160f4d1/27497196359.pdf
    • http://soundreaming.org/wp-content/plugins/super-forms/uploads/php/files/77266f9524c67e799e1a9ae0b53937df/ketijogefab.pdf
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b06f72e6611---rabomeke.pdf
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/b3390eb6c7bb1557c30d306a0ee13d82/pegiviludosol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000122f5.bin
92aad78c3cb934a657c354b2273ec4c5fe898fb7999a0e051bb071520141fe01
pdf-font-stream PDF embedded font (sfnt) at offset 0x122F5 3012 bytes
font_01_sfnt_off00012dba.bin
f5d85a6c3d1517e92017d2c00f518fc4af311391dd095052b0916fd6cbc417b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DBA 5192 bytes
font_02_sfnt_off00013f60.bin
691c3296255c598e24dca77cdd5d20773972a3d08d90c457faebdd7de48ce05b
pdf-font-stream PDF embedded font (sfnt) at offset 0x13F60 14344 bytes