Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d0f69ae8cabe91…

MALICIOUS

PDF

165.7 KB Created: 2021-07-26 15:05:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 7e0650568f089cb3d659adb0cc5746ca SHA-1: b260a37fcaf95f0c129ea76f940555d0b5ee0b3a SHA-256: 02d0f69ae8cabe916994f9185f299b409a9ca4ea9af12dd3517bbe3324990dd5
156 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. The ClamAV detection and ML classifier flagging indicate malicious intent, likely to lure users to download further malware or engage in phishing. No scripts were extracted, but the link farm structure is a common technique for distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9336

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/474e87a495b612ec2a4b1d213108fae2/lenedupofizun.pdf In PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ac2546297f8---lexisotademuw.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9d0f499fe---rakusin.pdfIn PDF document text
    • http://ville-dammarie.com/ckfinder/userfiles/files/xevolurevuramezizoraxuw.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607502550a4f0---190341495.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bf4e9ed43a1---xeribol.pdfIn PDF document text
    • http://haniltm.kr/upfiles/editor/files/notexifexaxeximivanumim.pdfIn PDF document text
    • https://pezenasenchantee.fr/userfiles/file/bojonefopuzoxupukidemura.pdfIn PDF document text
    • https://ewastexperts.com/userfiles/files/10030371375.pdfIn PDF document text
    • https://chungcungoaigiao.net/uploads/files/72219557012.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/28725230059.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/4991665461.pdfIn PDF document text
    • https://sfeerweter.nl/userfiles/files/36744819803.pdfIn PDF document text
    • http://ahsaipu.com/v15/Upload/file/2021562231526921.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160a28b5ecf017---polal.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/04ea0f7f66a600c311b3f0ba503c2679/wakatexapubizujipamili.pdfIn PDF document text
    • http://aitrans.cn/UploadFile/file/F1202106261353404039.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cffd0272838---jopedipukipomumoj.pdfIn PDF document text
    • http://dtpokebar.com/uploads/files/91219366675.pdfIn PDF document text
    • http://tktravel.shop/FileData/ckfinder/files/20210602_DEAFF4F95DCC9E9A.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/vs2n9j4ns57ts108rlsgl03775/79113864619.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/sonowiwaxorixezibakawe.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/a448ad35bf3fe41279c100b17c325f72/55761069395.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=what+is+the+conflict+in+lord+of+the+flies+chapter+1PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00022a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22A05 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0002421c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2421C 10764 bytes
SHA-256: 27eedde0d05372c9fde1d06d69446b11962726f43e3533d99c62542e13de7cb3
font_02_sfnt_off00025add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25ADD 16988 bytes
SHA-256: d7ffc4f3ca0665b956eef8467a15e64cc52d848a464cc3f7c35175f72c550f68

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