Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c3645e3b72c5d2…

MALICIOUS

PDF

77.9 KB Created: 2021-07-02 23:09:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ffd08c35cad6ad55ba1adf7a2bfc7e4f SHA-1: 30eb5d71669858c48c372cecaad8b8ace421a797 SHA-256: 09c3645e3b72c5d24b828a43a9e31c2b37eddad6afb63cfee03e305f4d9fee34
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1055.012 Process Injection T1204.002 Malicious Link

The PDF was flagged by multiple heuristics as a link farm hosted on compromised CMS uploads, indicating a phishing or redirection attempt. ClamAV also detected it as a phishing trojan. The presence of numerous unknown URLs on disposable hosting further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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 http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba47e6d4c4f---97061423754.pdf In PDF document text
    • http://aryajob.com/user_upload/file/99031962999.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/dobodarogatazexikunalu.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/qjjp91esuehg0vj62e4i03cdf5/lixitazumune.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/86e82a167f5be47cf7f0597b786cef49/bujipuve.pdfIn PDF document text
    • http://www.microsinusectomi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607157a79e632---jawenagugudibajerewije.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/lezoxifokesegotafake.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/456fa0bdf0bc76144a38b410d587c6e7/zoximafitesun.pdfIn PDF document text
    • https://albawadiroad.com/userfiles/files/kotevupexukure.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075943e7ddf5---fipitemuradite.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160bca3649e25e---19523678667.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/zaxaworamixim.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160ac46808894c---56195707839.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d39a2f1d5---likuxudezebivekot.pdfIn PDF document text
    • https://amblamy.ee/upload/file/91270682534.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/dacafa5b838ccac4ac5c43caf00c9c50/jerowid.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/c4ajviv86h1l5dd2cbup3teuml/wuxokos.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a9bd500925---48471374516.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608728b5c429e---12130922099.pdfIn PDF document text
    • http://joy05.com/_UploadFile/Images/file/6263711188.pdfIn PDF document text
    • http://vandientuchinhhang.com/upload/files/xovewidodinepi.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d1532d823d---xobex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=unpaid+meaning+in+englishPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD9E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e5b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B5 10528 bytes
SHA-256: dc8ed396bb0cf5739dbcf30d6751538494c916d2720ff80f08ee75de900f3dd7
font_02_sfnt_off0000fd24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD24 17720 bytes
SHA-256: c20bf517a959509666cf4b90a5cac9e565324ac488eeb72571bfb25e6210e23b

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