Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac33447aa947850…

MALICIOUS

PDF

64.1 KB Created: 2021-02-15 00:46:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8cfdf9499e3a5097c4a2d794b1fd0289 SHA-1: 8715d770306121c1661ad8e2fe9a06605449bce0 SHA-256: eac33447aa947850306fae39a9c1e4ee0dff8688e97ac0d6de105a4695355b1a
96 Risk Score

Malware Insights

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

The file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to potentially malicious PDF files, suggesting a phishing or scam campaign. The presence of PDF_URI and EMBEDDED_URL heuristics further supports this, indicating the file's intent to redirect users to external, likely harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/123?utm_term=pancake+discord+bot+shop PDF link annotation
    • https://cdn.sqhk.co/levowexesu/aKUKaLi/battery_operated_lights_home_depot.pdfIn PDF document text
    • http://itslm.fun/stickman_battle_apkpuregl1jg.pdfIn PDF document text
    • http://spoonnumberone.xyz/free_icons_without_attributione424c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478127/normal_6023dbe9a7053.pdfIn PDF document text
    • https://cdn.sqhk.co/wejideduv/higgjja/43656664078.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408875/normal_6008cfa259715.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/hEpThbU/hello_neighbor_walkthrough_part_1_act_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393022/normal_5fcc53f21a55b.pdfIn PDF document text
    • https://cdn.sqhk.co/mubikidom/Dhghhhb/weed_eater_repair_service_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/dajusonas/jepw5sz/75502335545.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494883/normal_5fdd8e13b0c66.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzekofuwe/Abzii1f/better_looking_settlers_fallout_4.pdfIn PDF document text
    • http://gotedez.22web.org/whatsapp_apk_file_free_latest_version.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB170 5120 bytes
SHA-256: ac73bb67f8be57889a9f018a7e0a4a26c4bc47e4668123aad28d78103abcad68
font_01_sfnt_off0000c2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2BF 10248 bytes
SHA-256: 1b8097eacc8a4c749f66a3c951e1fbd66fa3be25c100d8b2a14f742cea645fe2
font_02_sfnt_off0000e5b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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