Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9ae08a2d16ba922…

MALICIOUS

PDF

74.0 KB Created: 2021-03-07 05:40:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 523070502d6b8afe8037da806b2f17ef SHA-1: d33ce9bf36b4ca1245e0b4a8f0e0429c639302f9 SHA-256: e9ae08a2d16ba9226cbecaf48b00f72dc66d4576d8c3545fc90e8d91755463b4
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL that appears to be a lure for phishing or malware delivery, disguised as a search result for educational content. No scripts were extracted, but the presence of the external URI and the overall detection suggest a phishing attempt.

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://ponafet.ru/wix?keyword=2016+ap+physics+1+multiple+choice
    • https://xufuluzigi.weebly.com/uploads/1/3/4/2/134266078/busemajewiwudobu.pdf
    • https://cdn.sqhk.co/fimirexuf/ljd5ghD/pezozidubilixobizi.pdf
    • https://pudesuvake.weebly.com/uploads/1/3/0/9/130969082/857ed3ec7.pdf
    • https://rabidibizuzej.weebly.com/uploads/1/3/4/6/134648686/zizebozimu-duvepiduti-tuvuvebomedozo-fuzedafif.pdf
    • https://cdn.sqhk.co/jesovolavig/Wjfigie/mijudutibazegip.pdf
    • http://mujoxoluvisukid.getenjoyment.net/love_languages_list.pdf
    • https://mijutadozas.weebly.com/uploads/1/3/4/5/134590660/fofeniweme.pdf
    • http://sowoxapexemex.sportsontheweb.net/33241942360.pdf
    • https://cdn.sqhk.co/dixejetafap/4hdgiY9/67062322330.pdf
    • https://pubodepilup.weebly.com/uploads/1/3/1/4/131406337/vujijalapivuwekol.pdf
    • https://xurozakewera.weebly.com/uploads/1/3/1/4/131414240/pawis.pdf
    • https://nenefifozotuve.weebly.com/uploads/1/3/0/8/130874038/rutevipej.pdf
    • https://cdn.sqhk.co/vefomatakin/Gihjclk/wulorexajizidiv.pdf
    • http://apcentral
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tuxenipup/buscar_mi_iphone_desde_dispositivo_android.pdf
    • https://s3.amazonaws.com/nonabafat/general_awareness_2019_with_answers.pdf
    • https://s3.amazonaws.com/sazomo/dipore.pdf
    • https://uploads.strikinglycdn.com/files/ee01b82d-20cd-4786-9c3f-1d54e35b3f53/tascam_388_calibration_tape.pdf
    • https://uploads.strikinglycdn.com/files/6f6875d6-8602-4846-8a1a-81c6cecfc340/18634791430.pdf
    • http://sidepojedava.myartsonline.com/gepamejuzeni.pdf
    • http://popofisofol.myartsonline.com/eat_fit_meal_plan_bewertung_deutsch.pdf
    • https://s3.amazonaws.com/mixanaz/99676996902.pdf
    • http://sovogezo.atwebpages.com/how_often_should_i_change_my_honeywell_air_filter.pdf
    • https://uploads.strikinglycdn.com/files/9c22a3d5-d8e1-45c2-9311-cdf1e3fdf41a/how_to_find_maximum_normal_stress.pdf
    • https://uploads.strikinglycdn.com/files/23c888aa-ad70-4e9f-aa1e-0bec77e89297/el_vendedor_ms_grande_del_mundo_2.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_off0000dab5.bin
32885e374c515fde4c29994ac68f173d6191fff4bb442c5fab7bb70708ebf04f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB5 5564 bytes
font_01_sfnt_off0000ed87.bin
59ae3c29cd72114aaa533017304c57cefbd54b6b4aaa84f62f831bb1b0cb6c13		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED87 13736 bytes

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