Malicious PDF — malware analysis report

Static analysis result for SHA-256 625c560c167d40d1…

MALICIOUS

PDF

113.7 KB Created: 2021-03-19 19:12:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04b485eb6341a83a7323d08df42e198e SHA-1: 10ada8437f0d609b4160eb8266682038219a55b4 SHA-256: 625c560c167d40d11191c4ea407ca8107fa6cb119ed7ebbb8ad5a60ddf8d94dc
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is likely used to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'bioclimatica arquitectura pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://mezovuduw.ru/award?keyword=bioclimatica+arquitectura+pdf
    • https://fajuvupo.weebly.com/uploads/1/3/5/3/135310445/senomamixafemer.pdf
    • https://jewadasin.weebly.com/uploads/1/3/4/6/134604584/8075758.pdf
    • https://jobadenel.weebly.com/uploads/1/3/1/1/131164033/a088d.pdf
    • https://tezosarotijup.weebly.com/uploads/1/3/4/3/134305137/9d83fc20773ae6c.pdf
    • http://khanapoorti.com/nacionalismo_vascofj0tt.pdf
    • http://samoe-samaya.ru/what_happens_in_mortal_enginesc8n9g.pdf
    • https://cdn-cms.f-static.net/uploads/4385648/normal_60338aea25071.pdf
    • https://vixufavem.weebly.com/uploads/1/3/2/6/132683014/givezugalagitotedo.pdf
    • https://cdn.sqhk.co/wanaxowuwot/bVgfeyf/77469360693.pdf
    • http://muldwych.com/temepiwoxexurokhapxh.pdf
    • https://cdn.sqhk.co/marezotije/fgcjgJY/joplin_mo_news.pdf
    • https://cdn-cms.f-static.net/uploads/4384295/normal_5fe96fb492135.pdf
    • https://cdn.sqhk.co/nodujugebi/quPihgf/new_york_city_highlights_tour.pdf
    • https://cdn-cms.f-static.net/uploads/4484143/normal_602f8ef835a2b.pdf
    • https://cdn-cms.f-static.net/uploads/4374983/normal_601d692359be6.pdf
    • http://fullpisetc.ru/remoxuzisukolesemi5yklg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://pitikepaz.epizy.com/ensayo_adentro_miguel_de_unamuno.pdf
    • http://maguvunu.epizy.com/59852279196.pdf
    • http://wobowix.rf.gd/bsc_chemistry_1st_year_question_papers_2020.pdf
    • http://sivadanoxibive.epizy.com/97199889401.pdf
    • https://s3.amazonaws.com/sojebelevenex/gibofasak.pdf
    • https://s3.amazonaws.com/gisujubolidine/weight_training_basics.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001715a.bin
9c43439f3a1f8939edb99b53c4c35a6cd59be7ce7f05d93d1f097a231ce5a1c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1715A 5072 bytes
font_01_sfnt_off00018296.bin
28cd845762698b85e7a40cc3990ac7b49565288f66aece095a8843199096e570
pdf-font-stream PDF embedded font (sfnt) at offset 0x18296 12268 bytes
font_02_sfnt_off0001aa0b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA0B 4324 bytes