Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfa2c29d0ff565b8…

MALICIOUS

PDF

73.3 KB Created: 2021-01-22 17:16:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 20634f58df1b9143002f6ed39c3ca47f SHA-1: 97d2e220e06df16ecc3d0a425fb79fdf55d6f95c SHA-256: bfa2c29d0ff565b86ebf1e17404eb7a8cba6ed11aca5c84f363b0dd9b77e9ced
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/123?utm_term=dawson+high+school+rebel+without+a+cause PDF link annotation
    • http://lajulufubugo.22web.org/94392182242.pdfIn PDF document text
    • https://site-1212439.mozfiles.com/files/1212439/zunuboronu.pdfIn PDF document text
    • https://cdn.sqhk.co/romemanir/jiiu4NZ/penalty_kick_game_theory.pdfIn PDF document text
    • http://fisidunetozusi.iblogger.org/65339854443.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/cihhhij/20459481026.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/7DLNd81/36260308350.pdfIn PDF document text
    • https://cdn.sqhk.co/melalisopapu/O5nBhjO/40715189152.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/36656913820.pdfIn PDF document text
    • http://xojazexodiwosi.epizy.com/2228529069.pdfIn PDF document text
    • http://ketavulamuxi.epizy.com/natamizixo.pdfIn PDF document text
    • http://fivamoxopel.epizy.com/omar_borkan_al_gala_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/de_videoder_uptodown.pdfIn PDF document text
    • http://kotutuvotijol.rf.gd/edgerouter_er-_x_user_guide.pdfIn PDF document text
    • http://koxaxinum.epizy.com/best_free_secure_vpn_for_android.pdfIn 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_off0000e325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE325 5292 bytes
SHA-256: fe9e8a7a7d63ad6c40813c130487348255becf823beacd80e29e488536f0cadf
font_01_sfnt_off0000f53b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53B 10444 bytes
SHA-256: 55b5e7ba0152d25aba783019d687531c8079bc709cd5cdd0868dbdb3a49fa733

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