Malicious PDF — malware analysis report

Static analysis result for SHA-256 69973775827c15a7…

MALICIOUS

PDF

86.7 KB Created: 2021-09-06 19:33:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 02eccd22def824a43da39f71b397d5a5 SHA-1: 9fe8641a57b86f6bbce740348a74e2d3dc8c6a09 SHA-256: 69973775827c15a7dd972227f41359468d0f0a6d3b4074da065d2a015944586a
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is classified as malicious and exhibits characteristics of a callback phishing or tech-support scam. The heuristic 'SE_CALLBACK_LURE' indicates the document prompts the user to call a phone number for issues related to billing, refunds, or security. While no scripts were extracted, the presence of multiple links to potentially compromised CMS upload storage and disposable hosting suggests an attempt to host malicious content or redirect users to phishing sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/bakiwixesugiwakiravaneli.pdf In PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6bdd7a0fc4---78528172397.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081d039e4112---80164447484.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608c25db6bf55---45177991959.pdfIn PDF document text
    • http://infinity-pro.ru/userfiles/file/66643934096.pdfIn PDF document text
    • https://hirurgija.me//files/45536257879.pdfIn PDF document text
    • http://cbgnfinance.com/userfiles/file/6211673570.pdfIn PDF document text
    • http://predit.ru/admin/ckfinder/userfiles/files/87855993865.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c5344e86858---54558745823.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aaab53a4d0a---gebudutavirisi.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/f167c881fc2902558e8c32b63c23eefb/86999255052.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/63865166098.pdfIn PDF document text
    • https://chogmai.org/ckfinder/userfiles/files/94569916830.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093e715f365e---jovatu.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/5c4cbe6b758d58c6f5c9caeef1cf880d/tevakugatel.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbf42e286b3---kotamaka.pdfIn PDF document text
    • http://porpora.biz/imagenes/imagenes_contenidos///teteraxu.pdfIn PDF document text
    • http://tydafa.com/dafa/uploadfiles/20210613030746.pdfIn PDF document text
    • http://sk-uralstroy.ru/uploads/files/zisufevufop.pdfIn PDF document text
    • https://hearing-outlet.com/uploads/files/202108271959118874.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/c23h1hsnhai4c44asua7ebcb62/8161886000.pdfIn PDF document text
    • http://alrabbanoilandgas.com/file/files/jesamaviwufudufagijuna.pdfIn PDF document text
    • http://arabstina.com/ckfinder/userfiles/files/wovukoraregokexowozuw.pdfIn PDF document text
    • http://17njl.com/userfiles/files/jofafegajuwawizom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=metastream+coupling+pdfPDF 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_off0000ee3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3B 11056 bytes
SHA-256: defb32bca7a3b37cced6c1e67e9b22ca847dea11f05789fa3288cb4d195c1917
font_01_sfnt_off000107c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD9 17604 bytes
SHA-256: 866abd0ad36eca67f60e17ee8a273ea0a8bf45f4b9b494dc04971e2120471046

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