Malicious PDF — malware analysis report

Static analysis result for SHA-256 71f495f434f0812f…

MALICIOUS

PDF

74.1 KB Created: 2021-02-11 18:45:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 8744e5307e09273e0e2eff08857078b8 SHA-1: 9a5ab0eba91e603f0312fde5924b1fbec53f84ed SHA-256: 71f495f434f0812fd9bf5ccffcf30e5ec57c9f92ec71943c104ee2c7e30488e0
126 Risk Score

Malware Insights

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

The PDF file contains multiple external links, including one to 'maypoin.ru', suggesting a phishing or scam attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for multiple linked PDFs, reinforcing the malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=wi-fi+dead+zones PDF link annotation
    • https://juxibawazorar.weebly.com/uploads/1/3/3/9/133997202/zufefod_sovipi_pilanirisuneben_mulokepinuroj.pdfIn PDF document text
    • https://wuzovogupo.weebly.com/uploads/1/3/4/7/134720757/xumuwugafabu.pdfIn PDF document text
    • http://ses-paypal.com/rejirinutusimumineq6z6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483346/normal_601706b9263f0.pdfIn PDF document text
    • https://funoridarudaru.weebly.com/uploads/1/3/5/3/135304061/879245.pdfIn PDF document text
    • https://nopefulewipedu.weebly.com/uploads/1/3/4/3/134314682/9ac03299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_601875cf2cd7e.pdfIn PDF document text
    • https://femesavez.weebly.com/uploads/1/3/1/3/131383434/1315027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448558/normal_5fd64e49a1205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412154/normal_5fe7d0b8cfa0d.pdfIn PDF document text
    • https://loworukad.weebly.com/uploads/1/3/5/3/135312099/7fb8c2c0abfe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404955/normal_600527697672d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459464/normal_5fe8f853b2cf0.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_off0000e292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE292 4868 bytes
SHA-256: 25bc3d348e754aeb8a93d14425a1cba7b4396b52056d1fba42033d60ead79541
font_01_sfnt_off0000f359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF359 12400 bytes
SHA-256: 52fa821739855c74d904c108ee84c40d528b09133a92d4251b6684bc4eee368c

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