Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db343651a0905f7…

MALICIOUS

PDF

78.5 KB Created: 2021-03-16 03:11:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e76d9e1ecdad163111fa2d79e08a6d7 SHA-1: 6906e12d7d255b7aa6205f10d344b7819613902a SHA-256: 9db343651a0905f72ce30c500079d7670c63aca9047f4341dae165d3cd3ea496
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as a phishing lure related to self-certification sickness forms. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lure suggest it's designed to lead the user to a malicious site, likely for credential harvesting or further malware deployment.

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://resalured.ru/award?keyword=self+certification+sickness+pdf
    • http://marketop.club/gymnastics_traininggl6q1.pdf
    • https://tulopudegiwidal.weebly.com/uploads/1/3/0/7/130739196/2189942.pdf
    • https://rejawezegevipi.weebly.com/uploads/1/3/1/4/131437848/9826688.pdf
    • http://bosemefawixuwov.mypressonline.com/47765689828.pdf
    • http://pixunune.sportsontheweb.net/84715424905.pdf
    • http://meetchambre.xyz/dazosevuwofosuki375mp.pdf
    • https://panusefebile.weebly.com/uploads/1/3/5/3/135331690/ff768e.pdf
    • https://demijejave.weebly.com/uploads/1/3/4/6/134607426/3106857.pdf
    • http://pidikugojan.22web.org/the_first_estate_was_made_up_of_frances_nobility.pdf
    • http://islemleriniz.org/tularewejodufebe9csd0.pdf
    • http://italysummer.space/the_odyssey_graphic_novel_audiobookrgww6.pdf
    • http://interplast.ru/freshetech_freeze_pipe_revieww6f6o.pdf
    • http://aicberg.net/guvikosufelz9y.pdf
    • http://comforfemj.fun/44633453794c1aoo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bitujavoza.epizy.com/92202408541.pdf
    • https://s3.amazonaws.com/mafavuzenoliki/sitofunokezaxeluwo.pdf
    • http://jesasudazewur.epizy.com/porter_cable_cordless_nailer_manual.pdf
    • http://vujapoguxesak.myartsonline.com/ab_initio_molecular_dynamics_basic_theory_and_advanced_methods.pdf
    • https://s3.amazonaws.com/memexelu/how_to_set_the_time_on_a_citizen_eco_drive_e820.pdf
    • https://s3.amazonaws.com/bokelur/dazomagoruwexarofoto.pdf
    • https://s3.amazonaws.com/xonobijikivo/vce_exam_simulator_crack_for_android.pdf
    • https://s3.amazonaws.com/dosipive/87879234851.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_off0000f3cb.bin
e8ef5c2f39b84792a854c0008842e2284cc2978faf719654e9a7b0057bd74a80
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CB 5316 bytes
font_01_sfnt_off000105f4.bin
db49d5020c51073101f3965142436004047576da3c8bae59eb73d49e1e036634
pdf-font-stream PDF embedded font (sfnt) at offset 0x105F4 10960 bytes