Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d9b2dc7f2a07c00…

MALICIOUS

PDF

91.2 KB Created: 2021-06-27 21:53:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 13a3e0e68a94027c57c56d27947f7109 SHA-1: a91b249a3d93ed45d74ed1c2f6e7d6b52a6a156a SHA-256: 7d9b2dc7f2a07c000f60be136851d91f8e60aaab98c86bc54844f2f3692a0623
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted, but the presence of external links and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/8bd82273c404e0ade35fb4118430303a/82016993389.pdf In PDF document text
    • http://dajuicebarus.com/uploads/files/xojeluxizet.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160c0ba0f32b36---jesoraratax.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b82adb13b19---64046330187.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b98971bf1---peperenapapaxixuteraf.pdfIn PDF document text
    • http://techsystem.gr/data/uploads/ckeditor/files/kuwomilodube.pdfIn PDF document text
    • https://mabuksusu.com/contents//files/89984116224.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c815362ea3---61031268356.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/rsa0634nv28r67sb16t5fmsg9k/koberobibolepewojatar.pdfIn PDF document text
    • http://sclifeguards.com/clients/16854/File/97830378710.pdfIn PDF document text
    • https://ancoraeducacion.com/images/kawiwedolanekin.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a50c176a9bf---suxeler.pdfIn PDF document text
    • http://isagenixmakessense.com/ckfinder/userfiles/files/dipil.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609980a09010c.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7ecc71e2c---depirabudadezinub.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e3de196b08.pdfIn PDF document text
    • http://icltindia.in/userfiles/file/tanewupag.pdfIn PDF document text
    • http://namjapizza.com/app/webroot/files/famemewunuzutipi.pdfIn PDF document text
    • http://kielcenoca.pl/files/file/nexofubatiwegadav.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/e8e024c310eb795f36275b188b4b35e0/74583711433.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c63e3dd9f6---xusamepotigajinopuv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=difference+between+city+school+and+village+schoolPDF 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_off0000fe12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE12 17480 bytes
SHA-256: c2dbdd4e0e3e5602bd164dcdfc3d4ad049619706c6ada261c01e6dafefad6a1e
font_01_sfnt_off00012bab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BAB 11160 bytes
SHA-256: a49e1cafcd64e83a0c51f37000985f60b9c57ec8a43b3ff6b8841ccb727fb8cb
font_02_sfnt_off0001459a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1459A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.