Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a6496600c7e41b9…

MALICIOUS

PDF

71.4 KB Created: 2021-02-24 06:53:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: f21256d272b6067e9393e5f0c2a176e0 SHA-1: cd95f8e9af7db6c98ec404e8bbc1bb8fdc906b04 SHA-256: 5a6496600c7e41b9e5e5d4eefe668584f58e9f00a9bf48721a34cc4fb0734655
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, contains references to 'sweat equity agreement template pdf' and is associated with numerous external URIs, many hosted on disposable domains, suggesting a phishing or scam attempt. The presence of embedded URLs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly indicate the document's purpose is 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://leonvi.ru/strik?utm_term=sweat+equity+agreement+template+pdf PDF link annotation
    • http://ligorowimilupux.22web.org/22374814194.pdfIn PDF document text
    • http://reassurez-moi-fr.info/belajar_excel_2013_tingkat_mahirwvcdb.pdfIn PDF document text
    • https://fekanarikivokil.weebly.com/uploads/1/3/4/8/134884633/2ed148cf936ac9.pdfIn PDF document text
    • https://ronunute.weebly.com/uploads/1/3/1/0/131070227/jetozuvatesijal_zobejavu_tulerawivejo_xudufuzatubabim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365553/normal_5ff906aa55277.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426812/normal_603450db7b7bc.pdfIn PDF document text
    • http://topuniversityru.fun/font_awesome_icons_svg0w4lv.pdfIn PDF document text
    • http://subumobo.22web.org/8452000510.pdfIn PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/2fffbc.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/cd7kgeW/71325682456.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416927/normal_5fff4e138a6a3.pdfIn PDF document text
    • https://gibitomenufe.weebly.com/uploads/1/3/4/0/134041720/mugamituzej_pijuz_givip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zolasot.rf.gd/17956109928.pdfIn PDF document text
    • http://dexixikix.epizy.com/2019_billboard_latin_music_awards_performances.pdfIn PDF document text
    • http://fabonek.rf.gd/70440219266.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_off0000d93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93E 5604 bytes
SHA-256: 9cc27bf6ce14e9cda1f9dba7188a9a42c4d4c8144201ce823a2f16947a88888d
font_01_sfnt_off0000ec46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC46 10644 bytes
SHA-256: 8ec5715a28174ac61a8bcc452faa766033b61460a7e381d0e146960128e93957

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