Malicious PDF — malware analysis report

Static analysis result for SHA-256 baaef17966421fb8…

MALICIOUS

PDF

78.9 KB Created: 2021-04-05 07:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3497e2ab337228994672204e43c10fb6 SHA-1: de7d9ce58c71a0dd7ec5e3a16ff60c6f54f2a20e SHA-256: baaef17966421fb8ff9525ae9f119d4ae75e4fe3e6dca89e44884b04362da539
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a URL that mimics a job description, suggesting a phishing lure. While no scripts were explicitly extracted, the PDF structure and embedded URI indicate an attempt to redirect the user to malicious content, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/award?keyword=school+coordinator+job+description+pdf
    • http://delaem-sami.online/learn_javascript_visually_downloadbric1.pdf
    • https://cdn-cms.f-static.net/uploads/4489428/normal_60383ec63f803.pdf
    • https://static.s123-cdn-static.com/uploads/4485321/normal_5ff8c9a3df503.pdf
    • http://vamoktin.ru/digixumowuwesekonesumepou6hr4.pdf
    • http://xawinewilapirog.iblogger.org/air_force_x_group_previous_year_question_paper_download.pdf
    • http://hurricane1.space/kabaddi_score_sheet_hdr6078.pdf
    • http://maturibcgj.space/880389895389hyva.pdf
    • http://fuvagezilavez.mygamesonline.org/1565209776.pdf
    • https://cdn-cms.f-static.net/uploads/4413583/normal_604fc9747647b.pdf
    • http://nekuwagibajese.getenjoyment.net/singular_and_plural_nouns_list.pdf
    • http://wojesukuzak.mygamesonline.org/61358048030.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6f73d14d-35b0-40b9-b9e6-71cf53e8f6f3/49274859838.pdf
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_1266927e4260449c8a47ea23ea8c39dc.pdf?index=true
    • https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_e6176b782f48492fa74d7d7a60fa7c56.pdf?index=true
    • http://sinijukiju.epizy.com/devanok.pdf
    • https://uploads.strikinglycdn.com/files/2c1ebfec-0bf3-41f0-9ce9-e78fd7a8d1e6/realidades_2_capitulo_1a_practice_workbook_1a-2_answers.pdf
    • http://bejelopelavisi.epizy.com/ahsanul_bayan_roman_urdu.pdf
    • https://ae8c1479-5121-4009-b0ed-8259dbb1205b.filesusr.com/ugd/0aff45_55113f2376cd446689c0bddf5fd26daa.pdf?index=true
    • https://60f6da8c-824c-4163-aae9-6195f2ac7ed4.filesusr.com/ugd/7f16bd_2e83afc71e6543e0b09240af4f934358.pdf?index=true
    • http://wavexijazibivat.myartsonline.com/apothecary_system.pdf
    • http://zokaramizixa.atwebpages.com/coreldraw_x8_user_manual.pdf
    • https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_73a215a86bc14bd285942eed4fa785f3.pdf?index=true
    • 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_off0000f743.bin
6dc97b5953777c5fc6e44d8a6abb325fae3e906896862294bb899bc1c3e652fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF743 5560 bytes
font_01_sfnt_off00010a27.bin
f95207e570a3a2a55949a34618c6d7fd11352c6adb91b0bd10ebda07355ee038		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A27 10512 bytes

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