Malicious PDF — malware analysis report

Static analysis result for SHA-256 715febc577f6a0e8…

MALICIOUS

PDF

80.4 KB Created: 2021-03-20 23:36:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d9dfe8af2790837f783549ddbbbc0b3 SHA-1: b9779df887623cd9b73409aec2584e1cc3e39d48 SHA-256: 715febc577f6a0e8fa48d6ec58f52ac93da98948693477032a3469e2a29f72e9
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'dbt therapy online free'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://resalured.ru/aws?utm_term=dbt+therapy+online+free
    • https://julupoberoraw.weebly.com/uploads/1/3/4/3/134353221/5a2a0d551.pdf
    • https://static.s123-cdn-static.com/uploads/4403674/normal_600075670c8e5.pdf
    • http://fizebiredasibi.mypressonline.com/warhammer_fantasy_roleplay_2nd_edition_character_sheet_fillable.pdf
    • https://vatikaleme.weebly.com/uploads/1/3/5/3/135386674/jemujat.pdf
    • http://lamaded.mywebcommunity.org/94725943316.pdf
    • https://cdn-cms.f-static.net/uploads/4487413/normal_6028ea0759cd0.pdf
    • https://nawuwisenaz.weebly.com/uploads/1/3/5/3/135318134/3269965.pdf
    • https://static.s123-cdn-static.com/uploads/4407793/normal_6002b8951a4b8.pdf
    • https://static.s123-cdn-static.com/uploads/4496586/normal_5ffbb1c45c735.pdf
    • https://cdn-cms.f-static.net/uploads/4425726/normal_60148f7c2370d.pdf
    • http://kevifiregerufug.scienceontheweb.net/honeywell_th8110r1008_installation_manual.pdf
    • https://static.s123-cdn-static.com/uploads/4370541/normal_5fe450ca8c9dd.pdf
    • http://lemakomude.sportsontheweb.net/19942932496.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://0dea665b-aaaa-42f3-a52c-f86f0fd1efa2.filesusr.com/ugd/8b9728_f114bcd11dfb4a2c828a78da2b613e31.pdf?index=true
    • http://doxokalisawe.myartsonline.com/loriwoki.pdf
    • http://pisonepegosa.myartsonline.com/44337830892.pdf
    • http://pabewuvuxaf.onlinewebshop.net/10041487722.pdf
    • http://pajupevezujugut.atwebpages.com/applied_mathematics_book_download.pdf
    • https://82e7f058-9c2a-4352-8e65-a162d98cde11.filesusr.com/ugd/ba3c76_c4453c9c7670470d8c1797ed9e130b34.pdf?index=true
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_adb5ada435644eedad18bcf4224c07ba.pdf?index=true
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_bcc575c41bec418b9cae231752df24df.pdf?index=true
    • https://8650d040-a33d-467d-a608-6706f181f11b.filesusr.com/ugd/61b8bf_de63656c19cd41f99076e12c2bae69ab.pdf?index=true
    • http://lobopekogolo.onlinewebshop.net/stairway_to_heaven_korean_drama_park_shin_hye.pdf
    • http://zesafemumibow.myartsonline.com/kivosagubaxe.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_off0000f06f.bin
b893fde495436c199fb2b1c65a4bb4ff22044f1b1b52a7ca1e8ba021684ba469		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF06F 4840 bytes
font_01_sfnt_off000100d9.bin
07c0dc103a4101a12abe029bf4de2bfb6c411b8f67c02174745b9283b6b047df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100D9 10728 bytes
font_02_sfnt_off00012593.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12593 4324 bytes

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