Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a5ed1c33bf48fd…

MALICIOUS

PDF

61.5 KB Created: 2021-03-02 05:54:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2875246a5d76fae686a7ad3068c5a758 SHA-1: c2029c658e4412bbec4284991f34e42fa18be0f0 SHA-256: a9a5ed1c33bf48fdeb0e411f0adb3e74c6f85e84859f6556a58fc0625711c4d3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/wix?keyword=gopro+hero+3+user+instructions PDF link annotation
    • http://kasyanbeauty.com/snapper_classic_riding_mower_baggerxns6h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388274/normal_603878902a739.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484806/normal_5fe0e8384c97f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367275/normal_60369a66257be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416672/normal_5fffaf1d4b87b.pdfIn PDF document text
    • http://pressit.space/damasum5pb18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494866/normal_603db09d88996.pdfIn PDF document text
    • http://instgrmmverifiedbadge.com/323202828136jau6.pdfIn PDF document text
    • http://myfirstsite.xyz/what_is_submissive_meaning_in_tamil_peacerz4j9.pdfIn PDF document text
    • http://usesoda.pro/combined_gas_law_practice_sheet_answersor3jz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470024/normal_60340908e5a04.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lejokadedemixo.rf.gd/dodds_narrows_tide_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/javuka.pdfIn PDF document text
    • http://xoxobesoxiti.epizy.com/benemiwoserikopubisu.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_off0000b8ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8AB 4976 bytes
SHA-256: 29d5da52ab2f7c12640fbfc2003f96f7aaa4460dd17c1579dde67f16c25da285
font_01_sfnt_off0000c998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC998 9360 bytes
SHA-256: e820075cc634536d5135b493cf40331309813fe88561424646039a628dc34295