Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4d2029a0ad24537…

MALICIOUS

PDF

85.6 KB Created: 2021-03-31 05:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84311808f79a948a015a77cd269fb9bc SHA-1: b876f2da0b4a52571bd4ad2931c0d0b3b3d21dbf SHA-256: e4d2029a0ad24537a578aee19057a921df0459a9196b103d3dcc206c9019c1cb
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains numerous embedded URLs, many of which are suspicious and point to potentially malicious domains. The PDF structure and embedded content suggest an attempt to trick the user into downloading further malicious content or visiting a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/wix?keyword=a+walk+in+the+woods+play+pdf
    • http://eagleaff.com/pearson_algebra_2_workbook_answers2jhny.pdf
    • https://gilotimo.weebly.com/uploads/1/3/4/8/134899899/ganuro.pdf
    • http://kellys.space/experimental_psychology_articlesxw1wl.pdf
    • http://nonly.xyz/63698864394lf7k0.pdf
    • http://adminhalil.com/what_happens_if_you_lose_your_gold_passport_in_foreign_countryupmig.pdf
    • https://cdn-cms.f-static.net/uploads/4463264/normal_60562c7124089.pdf
    • http://gobalesevusob.iblogger.org/watukidemefazepoz.pdf
    • https://boloxekovo.weebly.com/uploads/1/3/2/6/132681585/risubewemojojizo.pdf
    • http://xabigaxen.22web.org/pretty_little_liars_season_3_episode_15.pdf
    • https://wuvibimujefo.weebly.com/uploads/1/3/4/7/134705329/fulod.pdf
    • https://genexezo.weebly.com/uploads/1/3/4/6/134616565/1117241.pdf
    • http://good-production20.site/30240568353o6jxd.pdf
    • http://nuveclovet.xyz/41593872025427hv.pdf
    • http://webdefilmizle.com/supply_chain_management_certification_rutgers67efh.pdf
    • http://jokidinavefo.22web.org/cargo_airline_business_plan.pdf
    • https://cdn-cms.f-static.net/uploads/4455681/normal_603e6c5a8e385.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/4b495668-d6a5-4e55-ae9c-27bc9e429602/vofilakuxidilepove.pdf
    • https://uploads.strikinglycdn.com/files/1620ad13-60db-4c1a-ba70-86294e7cd4f7/28473546011.pdf
    • http://tuludad.rf.gd/jelutoviras.pdf
    • https://uploads.strikinglycdn.com/files/aedaa392-c79d-4461-8f92-a1b5c36193dd/microsoft_word_full_page_background_image.pdf
    • https://uploads.strikinglycdn.com/files/566e4293-b24c-4465-bb3c-fa7130941171/3162460838.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_off0001032c.bin
c7b3786217e9403e5933fefee0b2c4dde94b31d13a4aa87865a4181d5acf9e8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1032C 5068 bytes
font_01_sfnt_off0001147c.bin
5d60295a5cba155ce7c11218f096911ab4ee036fd4f8fa64883711a1ba58a5f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1147C 11316 bytes
font_02_sfnt_off00013b17.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B17 4324 bytes

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