Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea9f9d8ea33fe857…

MALICIOUS

PDF

82.2 KB Created: 2021-02-09 17:52:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b8e58fb3186f68da564d1d631f173ea4 SHA-1: 037fde5c1b09efd0c5021c90a1a2cf0202bb45d2 SHA-256: ea9f9d8ea33fe857d9050df19b22a668df77a02c76018130fcaf1de98727f30e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded external URI pointing to 'https://jottigo.ru/123?utm_term=big+falls+wisconsin', which is a common tactic for phishing or directing users to malicious sites. No scripts were extracted, but the presence of embedded URLs suggests the document's primary purpose is to redirect the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/123?utm_term=big+falls+wisconsin PDF link annotation
    • https://cdn.sqhk.co/xezalagefog/CnKHWge/winter_warz_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/nobukomorur/OvLOqjh/homeschool_teacher_planner_2020-_21.pdfIn PDF document text
    • http://kefisuful.iblogger.org/hydrogel_mask_vs_sheet_mask.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466165/normal_5ff2045773463.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466386/normal_5fd089b6e4aa2.pdfIn PDF document text
    • http://tonozezoziw.iblogger.org/xumofunuwotesekaxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379038/normal_5fda4b27708f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415742/normal_5ffa3179a0fa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487187/normal_601854b536320.pdfIn PDF document text
    • http://wisitens.online/697886775087r9on.pdfIn PDF document text
    • http://heliusdesign.ru/ignou_tentative_date_sheet_2018i1d8s.pdfIn PDF document text
    • http://teksalon.xyz/tunuvilapagemarumajnyn.pdfIn PDF document text
    • http://pasoxegidameso.iblogger.org/nolixolu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382972/normal_5fe301563e02a.pdfIn PDF document text
    • http://alex-travel.moscow/arachnophobia_full_movie_freeuwd3v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456132/normal_600202915b6c5.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/meludav/voruwofaremekebowuligi.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/35797690282.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/92798374595.pdfIn PDF document text
    • http://dipulitexaxuz.epizy.com/28588901405.pdfIn PDF document text
    • http://ripivetozevulu.epizy.com/zevamevibinulubazepefe.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE063 3044 bytes
SHA-256: 93e1da4877c7673ced3a440955b1747bf11a35a6cbd372c16bdfaf1abd1697c3
font_01_sfnt_off0000eb38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB38 5092 bytes
SHA-256: c1bfde5afaee4a1ad3697444eefb192114b428981461f0653eb6c62376c97da4
font_02_sfnt_off0000fcc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC0 12480 bytes
SHA-256: 8aca6883a0799eb16072343b7aee09a1d39ce16a6c9f3b13a76a92a5cb8b763f
font_03_sfnt_off00012619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12619 16088 bytes
SHA-256: f52bd4b593644f02f0f619435e5fa065f797232cc4e46520c8624770b7971a45

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