Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2d02a5bce8a6ef…

MALICIOUS

PDF

78.1 KB Created: 2021-06-05 05:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9ed778fc8c965d105f915a8d55b82314 SHA-1: ecda7d58ba3f508294cf389010bb74aa564b9504 SHA-256: 9f2d02a5bce8a6ef4a793102ee86c36bb954bc76efd5c8724e2659571d2abc2d
196 Risk Score

Malware Insights

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

The PDF document contains numerous links to compromised WordPress sites, disguised as a movie download lure. The primary heuristic indicates a malicious PDF containing a link farm designed to distribute further malicious content. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted, but the overall structure suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://queure.ru/uplcv?utm_term=twilight+2008+full+movie+in+hindi+dubbed+free+download PDF link annotation
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d28e0810fd---jesalepenuj.pdfIn PDF document text
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076cf07401f8---48370413545.pdfIn PDF document text
    • https://mymango.ru/wp-content/plugins/super-forms/uploads/php/files/e0a82bde5151278c58517075b36d017e/voboma.pdfIn PDF document text
    • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d2721dd378---bewosi.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/b3d8091a3b1ed35296c70ccabe7c96ff/50906481634.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/iud7tjk0pfh1h1e475ipuc8qrc/wofuvisubaviraz.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160828320912d0---17051700981.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/db92e539576ac2f55777666afda9b374/57196891836.pdfIn PDF document text
    • http://strandedtattoo.net/file/vodudokinipipeka.pdfIn PDF document text
    • http://fullcolorspandoeken.nl/userfiles/file/riboxetefusetazemulet.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160947294f24d1---80959735112.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/01fb3a56d29219a2b970cd39b1f760a2/36760461941.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f534f377f---86116356009.pdfIn PDF document text
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd968218c8---98554906217.pdfIn PDF document text
    • http://valaptop.com/ImagesVA/file/tokatov.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a77bcc51289---64160216765.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/nazisafugoresubeguvexowix.pdfIn PDF document text
    • http://valeneighbors.com/userimages/kowifome.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FE 5852 bytes
SHA-256: 9b074ea157dfbc8e61c1035a1ef675ffe94233c3613945093f796fa92f2cb86b
font_01_sfnt_off000104d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D9 11216 bytes
SHA-256: a72c3bc2ea3ee255700230bb1c853e182680b0fc940dcfa689dc9cde8d0772fe

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