Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2edfbfc6cccb358…

MALICIOUS

PDF

70.9 KB Created: 2021-06-09 02:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 77d83d27ba8cd3604ba9e7907a0fadac SHA-1: b2a88733c153e313531db1105398abe3dbe23db8 SHA-256: b2edfbfc6cccb3586fba2a0c11916e28567ce1a7aa84d2552ada56cca9529e1a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting an attempt to redirect users to malicious content or download further payloads. The document body, though heavily obfuscated, contains references to game hacking, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8413

Heuristics 5

  • 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
  • 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://irlanc.ru/uplcv?utm_term=dead+zed+2+hacked+all+weapons+unlocked PDF link annotation
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/jeqcr83p1a9uqias9shu3ol143/dojonevi.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/89ee1c6c1324c3dbdac8e16972503fa2/vipuj.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/ccdf77344fff98d4cec74d6d9c56b491/bejosiweluxafiguravejon.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/d11c404001665416d5c3f4317a1806ff/96108955046.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/b2gmptgi06kgaeiomvk5hem1l7/98916831883.pdfIn PDF document text
    • http://euro-ex.net/images/blog//file/jabafinenurisepopus.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/h9rjff9at4kuf5f8k14utu8355/30353845573.pdfIn PDF document text
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160adbb3d6f15b---kexowapisavapozawulu.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607f146668a85---xapikupikivetoxesaka.pdfIn PDF document text
    • https://aspaeng.com/files/image/files/kozuzodo.pdfIn PDF document text
    • http://vo23.ru/upload/file/vonib.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1607b028108d5f---13244614638.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a33f9e371cd---puravixezed.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070cb547dcc2---44960271139.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff8cf6acec---gabevebesowudu.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/0fkcpf75oiabho2k3lucucgo56/75535086799.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac114d323c4---32399696025.pdfIn PDF document text
    • http://nature-revive.org/files/file/xetosinuwab.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5ab14343d---gubosutivugogorumil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE698 5400 bytes
SHA-256: ff732a4d43efd85b939db569a9a3b2f5e14990048cf8aaea26619e724f1e663e
font_01_sfnt_off0000f91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91D 10832 bytes
SHA-256: df1e3843910d33e5714a04cd0dd8fb81fc9327daf2dad4fe7380f8c86c7909e5

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