Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a25a119324e6e69…

MALICIOUS

PDF

74.4 KB Created: 2021-04-30 00:32:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ce3f55d227638cab07d5a3e2e10714e SHA-1: 7be8c8304dc3ddee5dcac90a1f16aa7a2f36e5db SHA-256: 4a25a119324e6e69604c4d3008473991651b38070fbfbc8ed864806bdfd889b9
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 by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, appears to be a lure related to 'Alex Rider point blanc chapter summary'. The presence of external URIs and the overall structure suggest the PDF is designed to redirect users to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://dugedepap.ru/strik?utm_term=alex+rider+point+blanc+chapter+summary
    • https://cdn-cms.f-static.net/uploads/4409403/normal_60207867314cb.pdf
    • https://static.s123-cdn-static.com/uploads/4406456/normal_5fc6804168708.pdf
    • https://vuzodafolo.weebly.com/uploads/1/3/4/7/134732359/fakiju_ginemipisun.pdf
    • https://cdn-cms.f-static.net/uploads/4486351/normal_6014f5c26fbf9.pdf
    • https://tumunonapuve.weebly.com/uploads/1/3/1/3/131379134/motipananifemuxuno.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://luzusimunire.rf.gd/1st_year_anniversary_logo_vector_free.pdf
    • http://gusagokasu.epizy.com/88077196592.pdf
    • http://jexonuwunow.epizy.com/object_oriented_software_engineering_using_uml_patterns_and_java.pdf
    • https://2a009ac4-5770-49f2-ae16-4ce107243443.filesusr.com/ugd/59deca_c6ee4302313747d8bd7153570a19ccdc.pdf?index=true
    • http://fadakivok.rf.gd/cabal_mobile_apk.pdf
    • http://zuzilij.epizy.com/27680992812.pdf
    • https://uploads.strikinglycdn.com/files/d8daf356-c936-4b2e-94bb-b9704ae1516c/30730456279.pdf
    • http://wunikuwikefa.epizy.com/batolugukaw.pdf
    • https://uploads.strikinglycdn.com/files/98118399-e822-49a4-ba01-c6a0b4288b0d/43026622908.pdf
    • https://uploads.strikinglycdn.com/files/a09a148c-9eb0-4f64-b446-bcf2516b91c5/stanley_pocket_door_kit.pdf
    • https://uploads.strikinglycdn.com/files/2b67d075-1845-4342-bcc3-f43c3bbf78e8/24906540191.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e26b.bin
492acca5d163beeaa8a142c1f0466107a0190d13065c15e4ee700b3eec5f4c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE26B 5612 bytes
font_01_sfnt_off0000f557.bin
dadd6d32287a8dd74f1316ec257c4f9e4f96e67e582755f9ccb9beca47c771d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF557 10976 bytes

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