Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d2c710cd3e0d1e…

MALICIOUS

PDF

84.6 KB Created: 2021-06-26 10:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1071607c420654ad0a7947ec7210e72a SHA-1: a68ec218e9adfa0cbafa2ca68158d8c44f99f1f9 SHA-256: 94d2c710cd3e0d1ee90641b22303c81680d293dae2edae1bd95132f63b69b42c
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, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS uploads and disposable hosting. The primary goal appears to be directing users to external, potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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://www.allatpatikapecs.hu/images/file/juzufazoleb.pdf
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16085df3fe1836---vefogemomepuridurike.pdf
    • http://ztkammer.at/uploads/file/18690126708.pdf
    • http://montaze.org/democms/userfiles/file/sagenolajorasa.pdf
    • https://misionesmedellin2030.com/wp-content/plugins/super-forms/uploads/php/files/8obr49ov13bhmcvvffp295kd4t/96293606605.pdf
    • http://kjphotocon.org/data/userfiles/files/loder.pdf
    • http://10glazsikeyrosa.ru/file/37161864064.pdf
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609f736cd0baf---xafunome.pdf
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160927bb895758---kagusagotudajiki.pdf
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/13b66ae9a69b9e404b082d1fac68cd65/zaduvenakop.pdf
    • http://www.jobsincrete.gr/images/_user_na/file/56162641408.pdf
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/761dac80c9a51a03ed08976380dfe599/2737217828.pdf
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b854ad4ad92---pepofozirosagofifizalu.pdf
    • http://kardelendalgicpompa.com/uploadfiles/file/ribovavunotudepar.pdf
    • http://xn--49s538bo8ux8c.net/userfiles/file/mudamatidanuse.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/2aea2a92c9638dbcd3ab2632b05b1eb6/xufarabugodamum.pdf
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/2935255816ae90a912b0193d9633bd56/fomovosaperobadikapinew.pdf
    • https://drinkpoint.com/uploads/files/39409841814.pdf
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/ehjvvn91ucrjic337e5fdv2gjr/gifonepesokoxopoxekuvax.pdf
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/clocdplnspa5qb1beuldh72id8/18851181452.pdf
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/8656698cf2e1010a9b5701683a2fa5a5/72189357005.pdf
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe93f8ce2f---93489997118.pdf
    • http://bisenzia.it/userfiles/files/55738426157.pdf
    • http://hud101.vn/webroot/img/posts/files/30887166045.pdf
    • http://zulassungsservice4you.de/bilder/file/30881437184.pdf
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/61895dfe999f5504e66b4f0203ebcf95/87790354463.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=normal+oxygen+level+in+human+body
    • 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_off0000ea4b.bin
3229de986b5f2e949b2dfcac7b3406e62c6bf0efe9153e9cb4e2ce85b3da4580
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4B 10928 bytes
font_01_sfnt_off00010325.bin
238873e108bd847c978f4bb9ae20ad2c1e4c453b321a0197f0882c80f4faa854
pdf-font-stream PDF embedded font (sfnt) at offset 0x10325 16700 bytes
font_02_sfnt_off00012de0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE0 16792 bytes