Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbdf324cae1237c…

MALICIOUS

PDF

82.5 KB Created: 2021-03-18 16:31:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24a3989817197f37e10ea52b747c3edd SHA-1: 9e59b3d87ea3809a77917ce99331e2c300401384 SHA-256: 0cbdf324cae1237c1a39bfcef79b59044e9e09265ccc6e045bcc4aba9c9574fe
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL, identified by the PDF_URI heuristic, pointing to 'https://botokaw.ru/award?keyword=algebra+2+practice+pdf'. This URL is likely part of a phishing or scam campaign, aiming to trick users into downloading further malicious content or revealing sensitive information. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/award?keyword=algebra+2+practice+pdf
    • http://pizidojokinesa.66ghz.com/11395245786.pdf
    • https://cdn.sqhk.co/gepabafi/idPigB9/excursiones_msc_caribe.pdf
    • https://cdn.sqhk.co/ruwiketi/gimifZu/purpose_of_a_balance_sheet_reconciliation.pdf
    • https://cdn.sqhk.co/depifozopupe/JJieiiJ/jideb.pdf
    • http://ig-objectionform.com/docker_alpine_apk_add_python1k20t.pdf
    • http://accueilcmb.com/melupujulo9p2pp.pdf
    • https://cdn.sqhk.co/zoluxoni/jdjiibx/tuzezi.pdf
    • https://cdn.sqhk.co/juwafajem/jhigirp/botolujarugunamorosariwu.pdf
    • https://cdn.sqhk.co/vanewano/iSid2ic/10228639266.pdf
    • http://jesawukimefix.mypressonline.com/measurement_instrumentation_lab_manual.pdf
    • https://cdn.sqhk.co/wobegideguxa/gjajhl5/byju_s_school_super_league_answer_key.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dirulibas.onlinewebshop.net/80692131406.pdf
    • http://vovivufevalo.rf.gd/summers_heat_1500_pellet_stove_manual.pdf
    • https://s3.amazonaws.com/bidivo/isc2_ccsp_cbk.pdf
    • https://s3.amazonaws.com/bipepezuwed/repeating_decimals_to_fractions_worksheets.pdf
    • http://vevubajiziju.epizy.com/59951838899.pdf
    • http://magegefopo.atwebpages.com/57764361874.pdf
    • http://dopovis.myartsonline.com/77421820933.pdf
    • https://s3.amazonaws.com/gedexim/75667387930.pdf
    • https://s3.amazonaws.com/tuxalowafokuvo/mr_bow_mod_apk_terbaru.pdf
    • https://s3.amazonaws.com/gizonukorad/temotexugifubiso.pdf
    • http://teruwizirazi.rf.gd/an_american_tail_movie_worksheet.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_off0000f728.bin
ccdab55c39a9be83eb573ff151012a0e6a1a6d6e892589e7293eb4cb41b5a560
pdf-font-stream PDF embedded font (sfnt) at offset 0xF728 4980 bytes
font_01_sfnt_off00010821.bin
fb5598a9b2e253bfbf35e787956142e793aab474bfa5e44b4437c7084e9a856d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10821 11284 bytes
font_02_sfnt_off00012e71.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x12E71 4324 bytes