Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b32645952c7690b…

MALICIOUS

PDF

79.8 KB Created: 2021-03-18 05:58:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 520f63b01e759105a5aeda3fce91f1c3 SHA-1: 9992b6d9d84591c6b94afab4b443e8cf524c0c34 SHA-256: 8b32645952c7690b4b081e2045c7f270373240692a84d183ec4d8bc2c5bfa40e
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a suspicious domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential harvesting or malware distribution. No scripts were extracted, but the presence of external URIs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/strik?utm_term=is+toto+washlet+sanitary PDF link annotation
    • http://gifozuxozud.22web.org/biremitatebonuzal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404103/normal_5fd9a5e72c0fe.pdfIn PDF document text
    • http://tufataf.22web.org/dikirugag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466673/normal_5fcf1688a18bc.pdfIn PDF document text
    • http://masajsalonunuz.com/34908165774dxsvf.pdfIn PDF document text
    • http://veronaital.space/sole_e95_elliptical_specstdlk9.pdfIn PDF document text
    • http://barashik.space/call_of_duty_4_zone_english_folder_downloadmlg7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474989/normal_600641e16f8fe.pdfIn PDF document text
    • http://ideal-it.fun/22718815966597ch.pdfIn PDF document text
    • http://ig-support-service.com/jonozebudefenomttlv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/077a2d0d-1a76-49ed-a197-28e78df3bb5e/amscope_microscope_case.pdfIn PDF document text
    • http://muvelexadaw.epizy.com/bubble_struggle_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbd9bb17-1dac-4464-93c3-fe0d59252f14/rekebefumaxonogawo.pdfIn PDF document text
    • https://9fc80a0e-b25b-4135-afeb-9811a1ea6bf8.filesusr.com/ugd/91e123_fea256e26a7d4f19bce230eedfb06830.pdf?index=trueIn PDF document text
    • https://45e41439-46a4-4c97-84f0-155cfeda4cef.filesusr.com/ugd/9d7ad9_98a52d180e984147918fe9f71c4edd21.pdf?index=trueIn PDF document text
    • https://c370dac7-4848-4fa0-a6df-94361299e8ba.filesusr.com/ugd/fa6303_7b0c9f140247433781e4031b58d363c5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/50425150-8cbd-402f-b2fa-d343ffb9c578/ejercicios_verbos_irregulares_en_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c369861-939c-492f-8617-113ef5866966/best_self_help_books_for_finding_happiness.pdfIn PDF document text
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_53ea115baea7494e849de3003c5894fe.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e90f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90F 3988 bytes
SHA-256: ccf46050f43e8ec4f40ef3cd2c6a0e04cde5c0038bd65024797fba25f38fdab4
font_01_sfnt_off0000f736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF736 4904 bytes
SHA-256: 9fcf285a68270fc9db9595636dc437f0d1b042075619c5e6d23e53bfba1a94cb
font_02_sfnt_off000107f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107F0 12264 bytes
SHA-256: 3f078d606ea17a6d4f99cc0b32e9126066131d75d9604809f469ed0eabfba83a

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