Malicious PDF — malware analysis report

Static analysis result for SHA-256 61707a6280c6c028…

MALICIOUS

PDF

225.3 KB Created: 2021-02-13 03:11:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d601d8f3f722f489f4e33dab19244876 SHA-1: 827fa3097cdc3b065a7d6e7bd1e5d281a8bcf5a5 SHA-256: 61707a6280c6c02896613c7cc32a62d374a82b8ab1d66db93e95158e9802dec5
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to redirect the user to a malicious site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of an external URI suggests an attempt to lead the user to a compromised or malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wix?keyword=vo2+max+to+mets PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418575/normal_5ffe1f7a28116.pdfIn PDF document text
    • https://bovitala.weebly.com/uploads/1/3/4/4/134497817/9599689.pdfIn PDF document text
    • https://cdn.sqhk.co/boxumiza/gg1DYp0/best_voice_changer_offline.pdfIn PDF document text
    • https://cdn.sqhk.co/zotipimesaza/yihjeii/83312827018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444100/normal_600b19e221882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456114/normal_601370e6abc5b.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/ZuuVijh/gift_card_cash_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_60143a78b439d.pdfIn PDF document text
    • https://cdn.sqhk.co/sotisajen/j5UnLux/gujomexug.pdfIn PDF document text
    • https://bexavulurezil.weebly.com/uploads/1/3/0/7/130738929/tiwex.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
    • http://bijalefopate.rf.gd/bagodevokodan.pdfIn PDF document text
    • http://buwomonemagup.epizy.com/furev.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/pafugelujiworonuxut.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/bash_profile_mac_template.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/informacion_sobre_el_bullying_causas_y_consecuencias.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/39484735383.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/alien_shooter_revisited_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/coop_norge_sa_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/driver_bcm20702a0_hp_pavilion_g4.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/24461773105.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_off000327f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327F5 4500 bytes
SHA-256: f96099a5616ff9ba8f1428442bf1bd7408d1f40c45981faa9ca5e92bbc7705af
font_01_sfnt_off00033739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33739 16444 bytes
SHA-256: 06888d8335c54664798bb4729c5ef1f8bbbf14833aa997ebaff7bac868c6edb0
font_02_sfnt_off0003690a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3690A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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