Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1020ed45bb8992…

MALICIOUS

PDF

74.8 KB Created: 2021-06-15 16:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ee81908a3a512f80c4de35bb8ecb341 SHA-1: cad61531c3f73d8e42388cda8009a0906f112b1f SHA-256: 0c1020ed45bb8992de247aeb4e06a18240190bbfbcc96a430c64c76ba3e2c6ad
156 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links, many pointing to compromised WordPress sites, designed to redirect users to malicious content. The presence of external URIs and link farms suggests an attempt to distribute malware or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://inwebjor.ru/uplcv?utm_term=la+vida+secreta+de+tus+mascotas+2
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607111479c0ba---6815462789.pdf
    • http://a-swiss.com/upload/userfiles/file/30880096149.pdf
    • http://namthangbasaltstone.com/uploads/image/files/gazedasaxarefu.pdf
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/783036bed66f9d0891bfccfd810bfed4/20365195955.pdf
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b748fdc488b---90587215647.pdf
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/7eabf88dc9cb501dceea859109d7070a/62545898917.pdf
    • http://brandweeramsterdamamstellanden.nl/userfiles/file/21035428328.pdf
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/knr1ncq1c4c0ofer756fsmnb48/nodavekuwijupa.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608402d2a01ff---28939399561.pdf
    • https://energooptima.hu/upload/File/9477425438.pdf
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16075684c139ec---76927110876.pdf
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/f2a8dd9faa0ccf3477e7b6592364162f/8007028839.pdf
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ac785b0fecd---83326989291.pdf
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/31fdcd3354b77457e2876a7bac618cd1/modibaxajabenalilaja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e336.bin
a0209f8d58f579d2cc29680ab15375bc277f177f9ee3ca168102081cadb3bbea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE336 5188 bytes
font_01_sfnt_off0000f4d2.bin
8a0e684c9567aeb8a507ce87cfd58cbfb2be125e9c366fa165859aad44244a87		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D2 12220 bytes

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