Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fc290fbd0a3b42…

MALICIOUS

PDF

81.1 KB Created: 2021-03-18 15:55:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8a2c7b9ee30a04fd68b8a07f31e6f4b SHA-1: efc45e13c658e565eb92149fe71a09ca9a827225 SHA-256: 02fc290fbd0a3b426620a911145304a736e12df205b976000947285f6f121f5c
96 Risk Score

Malware Insights

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

The file is a PDF containing multiple embedded URLs, with one specifically identified as an external URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'non renewable energy advantages and disadvantages pdf', which is likely a pretext to encourage clicking the embedded malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=non+renewable+energy+advantages+and+disadvantages+pdf
    • https://cdn.sqhk.co/vabolepibe/PYrijSq/autocad_2015_manual_free.pdf
    • https://cdn-cms.f-static.net/uploads/4446270/normal_5fd683bc4d96d.pdf
    • http://tafuxasomup.getenjoyment.net/appsc_calendar_2020.pdf
    • http://lasns.fun/24128091881fu88a.pdf
    • https://cdn.sqhk.co/duzoxibuf/gjcpjdu/49312590298.pdf
    • https://demuxovepeb.weebly.com/uploads/1/3/4/3/134311881/11004137919.pdf
    • https://cdn.sqhk.co/miloxuso/0hcL8hg/19978310271.pdf
    • https://nofuxufemi.weebly.com/uploads/1/3/2/6/132681390/wozavenopej.pdf
    • http://yandex-dostav.ru/fugobujosowa9akel.pdf
    • http://antonioit.space/what_are_the_symptoms_of_covid-19_pandemicukzmm.pdf
    • https://cdn.sqhk.co/mudemodox/TlgKPii/mars_opposite_mars_synastry.pdf
    • http://fastnoutservice.ru/readiness_for_enhanced_comfort_nursing_interventions91s9q.pdf
    • https://cdn-cms.f-static.net/uploads/4461481/normal_60299c358709f.pdf
    • https://nipetetoxijekuj.weebly.com/uploads/1/3/4/7/134718304/wujezane.pdf
    • https://peminikagi.weebly.com/uploads/1/3/1/8/131856713/neletiwi_limalisemigiriz_vasama_bunatakad.pdf
    • https://static.s123-cdn-static.com/uploads/4494138/normal_5fc5dbb9e44f1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fajonubinomeder/arch_paper_size_chart.pdf
    • https://s3.amazonaws.com/zulezov/browser_benchmark_android.pdf
    • https://s3.amazonaws.com/jemisajoda/bewoxoja.pdf
    • https://s3.amazonaws.com/sesafefanulokam/avery_5160_label_template_for_excel.pdf
    • http://wukevivetarapu.myartsonline.com/41486686580.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_off0000ff88.bin
1e2d77e950194c1efdc3f134fce2cdbe3e1f729989dcbae887dc13dc68ce8cab
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF88 5572 bytes
font_01_sfnt_off000112a4.bin
ea5b70a75ed4c07051d44062ca26636c02a5719f8fa94fea64012a04d336d8c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x112A4 10408 bytes