Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e0827e813c7378…

MALICIOUS

PDF

67.9 KB Created: 2021-01-11 17:50:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: e817bc90234665bfb14f9b3e194b9ef8 SHA-1: 7678501fe88e9847575d4019aa5cbedb51ae94a7 SHA-256: e2e0827e813c7378eddcdcf1cafa27f7ac8169a49119b4f293d1b28360321476
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable hosting and a known malicious redirector, indicating a phishing or malware distribution attempt. The heuristic firings, particularly 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'ML_NYX_PDF_MALICIOUS', strongly suggest malicious intent. While no scripts were explicitly extracted, the nature of the embedded links and the overall structure align with common PDF-based phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/aws?utm_term=free++borders+for+microsoft+word+2010 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4425728/normal_5fc3f396a4e58.pdfIn PDF document text
    • https://site-1175198.mozfiles.com/files/1175198/mega_ramp_impossible_stunts_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/Uge27jf/tawanojepo.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/ifOJzhc/3603559569.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/jfijEsv/winisesozibubin.pdfIn PDF document text
    • https://site-1177548.mozfiles.com/files/1177548/50144838867.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384639/normal_5fd661d801b1c.pdfIn PDF document text
    • https://cdn.sqhk.co/vomuvojovi/bjd9YRk/99508434991.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/aOUggqV/wasuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461495/normal_5fc6b20c99eb8.pdfIn PDF document text
    • https://site-1168114.mozfiles.com/files/1168114/wallpaper_sonic_hd_3ds.pdfIn PDF document text
    • https://site-1166067.mozfiles.com/files/1166067/xebixatuvugazutisux.pdfIn PDF document text
    • https://site-1167954.mozfiles.com/files/1167954/people_nearby_telegram.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ce9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9D 5436 bytes
SHA-256: cc8dabcf2f463acfc5bd730f6b2f92c06da1969423d5678891cd6bf3323a1e8d
font_01_sfnt_off0000e120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE120 9904 bytes
SHA-256: fa956bcdbacd2a646d9336f833b596b118337f27bd1e8058b92ad473dc3138b4

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