Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f7dae348c19c1df…

MALICIOUS

PDF

180.6 KB Created: 2021-06-12 14:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0ced794be16f64d18548c7ca656d8f63 SHA-1: 9186f4c25f3c479e0806de83ee8795dca9b7f9fe SHA-256: 5f7dae348c19c1dfc2adad6abf7de87485ea088c88653a03f0f2f04f7d37d412
154 Risk Score

Malware Insights

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

This PDF document is classified as malicious, exhibiting characteristics of a phishing or trojan delivery mechanism. It contains numerous links to compromised WordPress sites, suggesting an attempt to host and distribute malicious files. The document body, though heavily obfuscated, appears to be a lure for movie downloads, a common social engineering tactic. The presence of multiple external URIs and compromised CMS upload links indicates a pattern of redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9818

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://philabc.ru/uplcv?utm_term=anniyan+movie+download+in+tamil PDF link annotation
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/03791a7a39c2055f52147b0f921b769b/18297821915.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/17838595877.pdfIn PDF document text
    • http://wsm.hk/images/uploadfiles/file/94673856431.pdfIn PDF document text
    • http://staples1981.com/clients/b/ba/ba027a536d51c1d997ee76cae6dc9017/File/17415327239.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/pigalilolirexidedo.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/dhpkmjfee57mklqeohvq3agpg5/52983860606.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160729d96d09d4---fonalog.pdfIn PDF document text
    • http://security-m.jp/tool/images/file/vesenonotuluvakone.pdfIn PDF document text
    • http://alumcity.ru/userfiles/file/16035471108.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/99d7db9ab2325b2dc71378cd9992f5e7/24949862592.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16080f78d6187c---10551343547.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/1330358044.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079cec228a93---79965668311.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/e0aa5a4f8a500a7feebddc5e4aa3c3ec/85220747449.pdfIn PDF document text
    • http://zkojicin.cz/userfiles/file/35902709821.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc209e9ec7---74170335328.pdfIn PDF document text
    • https://readandenjoy.ae/userfiles/files/47433547508.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn 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_off0002aa5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA5A 4940 bytes
SHA-256: b1ca799ad10d7e987ff4ff83a30e8491d96644817e6ca57a9a2e8a04b6bcb346
font_01_sfnt_off0002bb30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB30 11228 bytes
SHA-256: 55d35cca80117f685b7be34b80ad89a9d52994ceaa742ffa025357b3b19b12e9

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