Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e6424bc3544d78…

MALICIOUS

PDF

85.7 KB Created: 2021-03-25 01:58:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb73483255c7b092385426b7723f6d2f SHA-1: 2f126d80c8eb06dbbefb79a909885a2d4e5a6edc SHA-256: f0e6424bc3544d788763eb65580338b80a2e637aac35bccbd794a56ea5381dba
136 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's a password-protected archive lure. The embedded URL points to a domain associated with phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'free marketing courses'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://botokaw.ru/strik?utm_term=cursos+gratis+marketing+digital
    • http://gedenidaxinexo.22web.org/ccrn_review_course.pdf
    • http://pirewixuzejetin.iblogger.org/baixar_wondershare_editor_crackeado.pdf
    • http://xukoxulopimob.22web.org/44920840397.pdf
    • http://dakolozen.22web.org/26559217842.pdf
    • http://pirewarekow.mywebcommunity.org/64454973268.pdf
    • http://rixorevu.getenjoyment.net/medical_biochemistry_textbook_free_download.pdf
    • http://dosijefa.mypressonline.com/jusunawawelus.pdf
    • http://bewewafip.scienceontheweb.net/89674724068.pdf
    • http://nujagexurej.medianewsonline.com/alif_episode_10_download.pdf
    • http://vumonivaxozutod.mypressonline.com/i_am_the_messenger_part_3_summary.pdf
    • http://bavedibigilomit.66ghz.com/xasanaduketuxemafowen.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/nosepevozux/icamera_1000_y_cable.pdf
    • https://s3.amazonaws.com/vavale/12055593730.pdf
    • https://uploads.strikinglycdn.com/files/5d25f1af-7fbb-4797-b362-a1b4407bddc9/jupevorukerulavuv.pdf
    • https://s3.amazonaws.com/dofufiri/worthy_is_the_lamb_hillsong_chords.pdf
    • https://uploads.strikinglycdn.com/files/d9ac1871-ed5e-4255-8c25-41e09c78b29e/rejiritogoriwa.pdf
    • http://ginubav.epizy.com/catholic_nativity_play_script.pdf
    • https://s3.amazonaws.com/dukajevo/mefebirevupekij.pdf
    • http://kubatejabudebuj.rf.gd/stages_of_hematopoiesis.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_off000103b4.bin
617d3de41836e5cb5169d8324faf04e2d3a97b2b3e3e1722a2474df49b5436bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x103B4 5112 bytes
font_01_sfnt_off00011504.bin
333ebfba9bdea7c7e5f16381b8974b1741d01bc1ed75aba87d2f1ed799325b14
pdf-font-stream PDF embedded font (sfnt) at offset 0x11504 11916 bytes
font_02_sfnt_off00013ba4.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x13BA4 4324 bytes