Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf8da9ebdf05194…

MALICIOUS

PDF

80.3 KB Created: 2021-06-18 09:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a77db0b8e283bbcbd8ebce8c548c4983 SHA-1: a7e3d0630f87de067cf0e02ee28ee7aa24f5ee35 SHA-256: baf8da9ebdf05194b5c9eb69cf05266ba49cb32afd2fbe460c4b1fc0e9fac81d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous URLs, many of which are hosted on compromised websites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of external links and the overall structure point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • 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://allytemp.ru/uplcv?utm_term=libros+de+guion+de+cine+pdf
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/hfkbvp0h12ft63s69l9mt91uoj/20801065446.pdf
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/4662dfa47dd8ba688c834e491fa4472f/61251856186.pdf
    • http://hanasushipickup.com/uploads/files/zizexunosuvisudikilili.pdf
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/l82k6uc58sh5936kchr9rk10j4/12969246076.pdf
    • https://ctapigroup3.com/contents//files/pisewivevakari.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bbefeecfc0f---mugewedubalakubagumuseme.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16073bed990350---lofinejorupaser.pdf
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ab7a6eba769---lumutobodi.pdf
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/25a3da8b8f7487c9f6201575bf7b3c6d/dafozudijafawogufiwi.pdf
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/dd1b502fbcdbf0384bc66f06cd24f7df/wajibigabewelili.pdf
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b79913103---95990822061.pdf
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b1a6728eef7---18817808785.pdf
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/o2qi92foqj9nqjpvhcviu540k1/posowuwaturutipakanezamu.pdf
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/ddm4a48v0ebqp4bjj7tjq5knqb/mimefolidikikakow.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/vl3rk759g80el120h031nv0eo3/zesazowulikoriragegomi.pdf
    • http://cezanart.com/userfiles/file/11924795292.pdf
    • https://kopari.hu/files/file/11567586292.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f22d.bin
5f831bf5a80595bffce83b58e7a2fb666e1fa8e704976ea7e2e0f07d845c89e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF22D 4964 bytes
font_01_sfnt_off00010310.bin
f6dc1021e0f5d6b142acd044797a39e927d706b16d11dc4b47ac6cfc712ccf08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10310 11920 bytes
font_02_sfnt_off000129c5.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129C5 4324 bytes

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