Malicious PDF — malware analysis report

Static analysis result for SHA-256 8429ceec0581cefa…

MALICIOUS

PDF

89.0 KB Created: 2021-06-29 11:36:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0bad95a66998c9b833276199899238a1 SHA-1: cc15a223a8f798cdba2c79050f8f57b2aadbf367 SHA-256: 8429ceec0581cefa74b066be930cc06f3256e41ef08f149f2aa6de6721ced6c1
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e4c854b15---pufotase.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160ac81da86079---52441587820.pdf
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/s939mrdv9atvo3rimhbircj2c4/kikebidoralusukanifubax.pdf
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/4f83dbea9b754439dd428e35440e48ed/30017148676.pdf
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/7dba75743594c7ce3569edd46e73a477/1842516905.pdf
    • http://sostrevalli.it/userfiles/files/57234653816.pdf
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16080241a5411c---82316027442.pdf
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/vegisi.pdf
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8ec36c2ec5---tedawevorukinogifu.pdf
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/bff2ac0550957efa613008d47cfbc640/daborefim.pdf
    • http://ilkyoukais.com/Images/Media/files/semis.pdf
    • https://vieclamkythuat123.com/upload/files/zojawakopaxolakibi.pdf
    • https://anpheatingandac.com/nbloom/fckuploads/file/35732399580.pdf
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e70210a31d---pagitujoziriteberawojon.pdf
    • http://flexa.cz/docs/file/18509553802.pdf
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/tulg957vcpo7fmh1s5f78pdh0u/kifoludu.pdf
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/85983a49023da9e796dba0056b0e41a4/feterana.pdf
    • https://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/orpcc8g725qv4n4jlv6cd2i60k/91455764098.pdf
    • https://steklo-shik.ru/userfiles/file/mitemalemudakavosovulige.pdf
    • http://akinmedikal.com/uploads/file/23609649627.pdf
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/e4f6a7f8908afcba69521b24d9c85578/gufavili.pdf
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/ff5b010b370b9ede5875eb6d68cf123e/74708516819.pdf
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/43addc540dcdef9c8db5a172ae0bf365/60700732059.pdf
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160890fe1a1992---15065713702.pdf
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607934173b9c3---33001260985.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=state+of+hawaii+section+8
    • 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_off0000faea.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEA 16792 bytes
font_01_sfnt_off000112fc.bin
47eb34c6b4163f5bf9cc99e077072d169053310b8118cc385ca5fb441572e3a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112FC 16620 bytes
font_02_sfnt_off00013e54.bin
1c92c51ace2f593fe3586dbd213853d2c9328a879161a927ffa94debca22c3df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E54 10656 bytes

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