Malicious PDF — malware analysis report

Static analysis result for SHA-256 90eeedf6a7f9d4da…

MALICIOUS

PDF

70.7 KB Created: 2021-03-16 04:26:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: a77e36ed23adfe47061a2b713204f920 SHA-1: beb39ac30bf6356e09fbb77217e9be6f480666f4 SHA-256: 90eeedf6a7f9d4da50731c3a4253a3505c6e8b7dc71e4b8f447473f95ec8386d
126 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous external URIs, with one prominent URL pointing to a domain associated with phishing and malware distribution. The document body, though heavily obfuscated, appears to contain metadata related to its creation, suggesting it was generated programmatically to serve as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/wix?keyword=springfield+xdm+guide+rod+laser PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411915/normal_604ca39f831d5.pdfIn PDF document text
    • http://jidugisukeranav.iblogger.org/kifupabumofu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454290/normal_6039529d2d6d5.pdfIn PDF document text
    • https://cdn.sqhk.co/fedugaxoloz/Jhb97gd/40336180291.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443576/normal_5ffebb0b0b66e.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/jboPfgg/learn_html5_and_css.pdfIn PDF document text
    • https://cdn.sqhk.co/dopuwene/Hgdrjjo/37238341595.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489740/normal_5ff805fe6d125.pdfIn PDF document text
    • https://cdn.sqhk.co/molivovuki/phiVhaZ/i_dreamed_a_dream_lyrics_karaoke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409619/normal_5fc97a3000927.pdfIn PDF document text
    • https://cdn.sqhk.co/fefavezevir/ZieP6wg/28841991830.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448100/normal_5ff9fa492fbf9.pdfIn PDF document text
    • https://cdn.sqhk.co/puburasar/LUgcKia/maza_chakula_picture_marathi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455890/normal_5fea1d92a296a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/72644113848.pdfIn PDF document text
    • http://lozufoxozaniso.rf.gd/69034846062.pdfIn PDF document text
    • http://doxewadafexe.rf.gd/libagiwipob.pdfIn PDF document text
    • http://liwubujuwu.epizy.com/62954518315.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/aplikasi_facebook_lite_nokia_x2_01.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_off0000d62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62B 5532 bytes
SHA-256: 3af1657da25a7c83a15f2e5ed8524c2c8c9da2dacba052dcf580f284c739f920
font_01_sfnt_off0000e8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EE 10728 bytes
SHA-256: 671139f3883063f901c3dde28d6712adfb9a5b74eb1dc0c723877c39ce579342

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