Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d94615de1069092…

MALICIOUS

PDF

86.3 KB Created: 2021-07-04 09:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5ac86f9815daac49b7fbec8123453acf SHA-1: 8103f758b804bb5cc937c80fb126c1372d989d3a SHA-256: 0d94615de1069092b6b3a345557ee4538f7edd030e60693fd4635beeef3c4074
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution attempt. The presence of a 'download button' lure further supports this, indicating the document is designed to trick users into downloading a payload. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://garglob.ru/uplcv?utm_term=nba+2k21+android+mod
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/054b642acde19ccb2daba0b7a4045736/31418963238.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086a32fb9eba---lajiwova.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076788234a92---vojeligo.pdf
    • http://jrpst.pl/userfiles/file/mubofafo.pdf
    • https://bjjewels.net/nbloom/fckuploads/file/vavudag.pdf
    • http://langeline.com/ckeditor/upload/files/tonemumuliruki.pdf
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160727f6d7c57b---jawavalorexafofewiwi.pdf
    • http://kjphotocon.org/data/userfiles/files/xerexipuvetut.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160867517c90b5---43165409095.pdf
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/33cf5cecae0f0a707534d0da05db8a8c/dojibaxi.pdf
    • http://nextgt.eu/uploads/file/46744826958.pdf
    • http://targhevaticane.it/userfiles/files/futuvubogugirine.pdf
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/02654ea52a80ba12ab8e55c5133b583c/39188657559.pdf
    • http://cc-loges.com/uploads/file/93726107401.pdf
    • http://parkettes.org/clients/b/b3/b30d687fb0e6fb0c44210170e51784d9/File/18632270102.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1608f0787af301---64181525016.pdf
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b06aac391dd---gutugere.pdf
    • http://vrtaspol.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/kazexiluwazewewarazur.pdf
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/399591374e009b070aae58795c06296f/gituzezex.pdf
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840e69e88a1---22695084771.pdf
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/582b216bce6763591ff7a58c91ca419f/66978658991.pdf
    • http://msamerica.net/clients/873634/File/30888963542.pdf
    • https://fultoys.com/userfiles/17540459783.pdf
    • http://yuhenganquan.com/userfiles/file/20210601164432_1334514203.pdf
    • http://softtox.com/new/userfiles/file/99563488690.pdf
    • 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_off0000efc0.bin
6f0302b35329f5802c2534096949934f7a69ff0043ffd77701f5ca1c948be964
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC0 10348 bytes
font_01_sfnt_off0001071a.bin
80fe3c6c4c8b81a6090cb10b589934733bd2ab29e26d7b6837c62b2dd1b3008a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1071A 17104 bytes
font_02_sfnt_off000133e8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x133E8 16792 bytes