Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7769324a6a96637…

MALICIOUS

PDF

71.7 KB Created: 2021-03-22 21:49:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5074ad3ec6f9dafeeaaf9c37278ecbf SHA-1: 90e4f7dc8150ef7536f2dc06b7235c2cfb223469 SHA-256: f7769324a6a966371e18995a5ebcf04fc53f05844c06677ad04937f27d57e19c
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that mimics a search result, likely intended to trick users into downloading further malicious content. No scripts were extracted, but the presence of external URIs and the phishing classification strongly suggest a malicious intent to deceive the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/wix?keyword=first+phone+call+from+heaven+pdf+download
    • https://static.s123-cdn-static.com/uploads/4456143/normal_5feb01bdf343a.pdf
    • http://nosinoski.shop/14594004100nvmgd.pdf
    • https://static.s123-cdn-static.com/uploads/4413973/normal_5ffdf3d9c1760.pdf
    • https://cdn-cms.f-static.net/uploads/4459035/normal_603b94335457e.pdf
    • http://goodsfor.life/the_hunchback_of_notre_dame_2_trailer_2001y7378.pdf
    • http://gojevomarokabe.getenjoyment.net/blending_words_for_grade_1.pdf
    • http://2020coupons.info/fopodarudole9wwcs.pdf
    • http://wotaxatumumodok.sportsontheweb.net/how_much_does_a_real_estate_education_cost.pdf
    • https://cdn-cms.f-static.net/uploads/4387817/normal_602fe0ac3ca04.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jozaponi/wabevefafomagedogape.pdf
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_c63976945c35466496dbf2d2fd0c25c9.pdf?index=true
    • http://bekusisit.atwebpages.com/cch_chuyn_jpg_sang_online.pdf
    • https://s3.amazonaws.com/jawusawar/99220851658.pdf
    • https://411563d6-f1a1-4768-9eaa-86e4eb1f1ae3.filesusr.com/ugd/6d8349_b62f1de24f7b47d493577ccf82677dab.pdf?index=true
    • https://38a589f5-619b-4230-bc7d-f88d9fc6dac5.filesusr.com/ugd/392051_d03adcc35df8460384b572a7ae4f657e.pdf?index=true
    • https://s3.amazonaws.com/vuforewebub/trastornos_de_ansiedad_en_adolescentes.pdf
    • https://c03439ef-6557-4199-865e-586791a52b6c.filesusr.com/ugd/6bb4a2_28a698e8512844978461cf52e1e6ea28.pdf?index=true
    • https://s3.amazonaws.com/dazawojob/xozuzevavilu.pdf
    • 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_off0000d8ad.bin
59b8f494f1cc2758477cca678e4ae2f60c80b13776250f63b13e676ed3683841
pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AD 5504 bytes
font_01_sfnt_off0000eb55.bin
51cee27f6a1b9eb1472a85f81c3cafcb9098f8acacea05d91a9e7e1a019d76be
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB55 10620 bytes