Malicious PDF — malware analysis report

Static analysis result for SHA-256 85e1e730c0f15317…

MALICIOUS

PDF

74.4 KB Created: 2021-03-20 14:59:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 313675979d4cc8fcaeae8cb798fe7249 SHA-1: 6d04fdcc61df7d7f3fe0f267ad8939147a453c16 SHA-256: 85e1e730c0f153174d576ddcfdfc642be39e2d703487db6b5c5391e23a24c71b
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI pointing to a suspicious domain, which is a strong indicator of phishing or malware distribution. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/wix?keyword=city+island+4+sim+town+tycoon+apk
    • https://tebideronapiza.weebly.com/uploads/1/3/1/4/131483209/fupevinob.pdf
    • https://cdn-cms.f-static.net/uploads/4369775/normal_603bc5e9307cd.pdf
    • https://cdn-cms.f-static.net/uploads/4403563/normal_5fe9e34011769.pdf
    • https://static.s123-cdn-static.com/uploads/4459329/normal_5ffa56f5e5bb1.pdf
    • http://mikovil.mywebcommunity.org/xeripege.pdf
    • https://static.s123-cdn-static.com/uploads/4372983/normal_5ff5556ca3694.pdf
    • https://wasexakenisopi.weebly.com/uploads/1/3/5/9/135982815/896bfb9e.pdf
    • http://siwupojotuj.getenjoyment.net/why_is_my_refrigerator_not_working_but_my_freezer_is.pdf
    • https://cdn-cms.f-static.net/uploads/4365613/normal_6036128389501.pdf
    • http://zovitidagawas.sportsontheweb.net/deepak_chopra_21_day_meditation_day_11.pdf
    • https://gemirolav.weebly.com/uploads/1/3/1/6/131606407/1135054.pdf
    • https://cdn-cms.f-static.net/uploads/4382187/normal_5fea0671cb7d3.pdf
    • http://tujubafi.getenjoyment.net/64256147184.pdf
    • https://dabusoze.weebly.com/uploads/1/3/4/5/134585091/kudutur.pdf
    • https://static.s123-cdn-static.com/uploads/4459320/normal_6000152a20953.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://6f465708-eb37-4ee2-8658-ebeec6cd93ea.filesusr.com/ugd/4bb103_b9fe0b15062b422c97c33567a8bd4943.pdf?index=true
    • https://s3.amazonaws.com/vavejijitatofu/nutufukegatowelafutir.pdf
    • https://s3.amazonaws.com/ruzaganog/re_registration_form_ignou_2018.pdf
    • https://s3.amazonaws.com/somamere/compound_sentences_worksheet_with_answer_key.pdf
    • https://fea67d75-dd3b-4bdd-af05-748e92ec8a52.filesusr.com/ugd/05900a_5ca0e682cd9b46c79d6874070a6abcbb.pdf?index=true
    • 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_off0000e0ed.bin
3907e3190b06bd494ca40c64f73f627d2514a9a4b595c584705d7a164cdeadec
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0ED 5376 bytes
font_01_sfnt_off0000f349.bin
bed1782fb7a2c67f7912ad0f3dbd70ec1cbe9bfb18882c7ef7a2475eda452da0
pdf-font-stream PDF embedded font (sfnt) at offset 0xF349 12408 bytes