Malicious PDF — malware analysis report

Static analysis result for SHA-256 08049af3cdef0092…

MALICIOUS

PDF

70.0 KB Created: 2021-03-24 09:22:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd61afd61de64f1139f6d3b818fd17f6 SHA-1: d8bffb27bbac55ce321e6bb92a4f790e6b031db8 SHA-256: 08049af3cdef009257720662d07d535d1ce8cc5c416706802511b94acdbf33b1
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://jumiwimov.ru/wix?keyword=robber+baron+or+captain+of+industry+worksheet', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jumiwimov.ru/wix?keyword=robber+baron+or+captain+of+industry+worksheet
    • http://bogavevi.22web.org/foolin_around_by_usher_raymond.pdf
    • http://zozagemidifisep.22web.org/2017-_18_bollywood_hit_songs.pdf
    • https://cdn.sqhk.co/xolofiwano/oIgi1jg/3682684595.pdf
    • http://vipadobotisituz.mygamesonline.org/the_andromeda_strain_2008_part_2.pdf
    • https://cdn.sqhk.co/xenaporo/hapicjf/33306215354.pdf
    • http://nexefugo.iblogger.org/75621613277.pdf
    • https://static.s123-cdn-static.com/uploads/4452845/normal_5fefe667eca3c.pdf
    • http://dusejetiwogodad.getenjoyment.net/acceptance_and_commitment_therapy_values.pdf
    • https://cdn.sqhk.co/tesikotuk/fvbjf26/meaning_true_democracy.pdf
    • http://galosidijixiwu.mypressonline.com/abstract_noun_worksheets_for_class_4_with_answers.pdf
    • http://bajifepeselok.sportsontheweb.net/what_is_the_movie_50_shades_darker_about.pdf
    • http://direkepexeg.22web.org/the_rabbit_who_wants_to_fall_asleep_review.pdf
    • http://zugasanuko.getenjoyment.net/how_to_change_waterpik_battery.pdf
    • https://static.s123-cdn-static.com/uploads/4369794/normal_5fddf6684d6ea.pdf
    • https://cdn-cms.f-static.net/uploads/4413240/normal_604d1e72289c1.pdf
    • https://static.s123-cdn-static.com/uploads/4478928/normal_600719e531e60.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pixoriwabivonol.rf.gd/57025674719.pdf
    • http://koradanizepagow.myartsonline.com/59541363434.pdf
    • http://bixozebaxikapos.atwebpages.com/iso_7816_4_apdu_commands.pdf
    • http://nelipofamarul.epizy.com/chapter_21_absolute_monarchs_in_europe_worksheet.pdf
    • http://vujuvisesakok.myartsonline.com/bonezat.pdf
    • http://pupagerirawax.myartsonline.com/vsepr_theory_in_detail.pdf
    • http://liwubujuwu.epizy.com/66370769462.pdf
    • http://wewilikenu.rf.gd/asakusa_shopping_map.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_off0000d5b1.bin
4dde0974979a121c9c01bc65b81a1daa323c5ee82db3920bf47d3d3d36e51be9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B1 5616 bytes
font_01_sfnt_off0000e8e3.bin
6583fa9794df2e9964687c51f32bd67f049f3ab45b1ec1fa4464765029e9b809		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E3 9808 bytes

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