Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1cb809feb4f08f…

MALICIOUS

PDF

82.2 KB Created: 2021-04-20 21:31:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 371bb84f29e5f34fa3efc66251a61b69 SHA-1: eb83a3d6de98db52dcd045828caf6fc9861ebb56 SHA-256: fa1cb809feb4f08f83b9d6af09c5a83e2b52f500680b3d49be7f4970680161cc
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or conduct phishing activities. The document body, though heavily obfuscated, suggests a lure related to 'project management professional bodies'. No scripts were extracted, but the presence of external URIs and the malware detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://xajibur.ru/strik?utm_term=project+management+professional+bodies+in+the+world PDF link annotation
    • http://vadosixajobirug.mygamesonline.org/buletom.pdfIn PDF document text
    • http://tukofiw.22web.org/rubiwekibezogapavolekeki.pdfIn PDF document text
    • http://rokuboxajiga.medianewsonline.com/algorithms_by_robert_sedgewick_kevin_wayne_free.pdfIn PDF document text
    • http://mibemuxagegija.mywebcommunity.org/banting_breakfast_recipes.pdfIn PDF document text
    • https://cdn.sqhk.co/fabokofe/gfieIP8/bogibamin.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/wurej.pdfIn PDF document text
    • https://cdn.sqhk.co/zinumazak/ihhcUlr/rabitefezadusiwomuxawe.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
    • https://s3.amazonaws.com/sabegokek/kirirezobuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/everglow_bon_bon_chocolat_song.pdfIn PDF document text
    • http://rosedosoxibi.epizy.com/feviridexebesiwiwevebuvo.pdfIn PDF document text
    • http://nukamepewavux.epizy.com/genesis_v2100_26_mountain_bike.pdfIn PDF document text
    • http://sisuwilir.epizy.com/16665534359.pdfIn PDF document text
    • http://mumitojeda.rf.gd/92680167949.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/file_b_ln_ngc.pdfIn PDF document text
    • http://nujilexulajuwup.atwebpages.com/sedozogemuzosew.pdfIn PDF document text
    • http://jiwepatifon.rf.gd/2185557266.pdfIn PDF document text
    • http://zukuvib.rf.gd/delavan_lake_wi_fishing_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/15576930419.pdfIn PDF document text
    • http://titasigor.epizy.com/lolozeg.pdfIn PDF document text
    • http://pugetuwozijeso.rf.gd/calendario_2018_peru_con_feriados.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a9bc5f7-4b85-4991-a4c9-7fe5151338c2/49936426770.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/bhavnagar_university_degree_certificate_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9de4c1c9-e429-4805-9b1a-b6804e5ccb9c/is_level_3_body_armor_worth_it.pdfIn 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_off0000f2b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B7 5668 bytes
SHA-256: e7a2d643a2459864e6266ec95113c4daf2dfb24d6ecc9aa3d32a8ad2941e2f93
font_01_sfnt_off000105d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D3 11708 bytes
SHA-256: 5e9976aa61f4e744770c935565d514c2d2fcc6d0ecfe1a6ba27e0d81c963a644
font_02_sfnt_off00012cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD8 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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