Malicious PDF — malware analysis report

Static analysis result for SHA-256 f732935ffb7e9fe1…

MALICIOUS

PDF

77.2 KB Created: 2021-02-18 14:37:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 2e4652d315c5a57af5be6c2be79fda55 SHA-1: d8682ab629bd5e4e924b8821c5a62303c96f9a39 SHA-256: f732935ffb7e9fe1e91e0d211b778c5925f89002048a6276c37ac0bb756cbc94
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to technical information, further supporting a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/strik?utm_term=which+machine+learning+algorithms+use+gradient+descent PDF link annotation
    • http://balifruit.com/libro_de_los_caballeros_templariospobyx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413017/normal_60059f758167d.pdfIn PDF document text
    • https://mutudibekakifu.weebly.com/uploads/1/3/1/3/131398274/8962263.pdfIn PDF document text
    • https://gupexududoteg.weebly.com/uploads/1/3/5/3/135302954/8628286.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454971/normal_5fc6cfafe371d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483365/normal_5fc8a9e558e96.pdfIn PDF document text
    • https://xofilovinavi.weebly.com/uploads/1/3/1/3/131379248/nofugew_tovetagura.pdfIn PDF document text
    • http://com-signto5.xyz/savejulisobic5kg3.pdfIn PDF document text
    • http://doucheop.xyz/how_do_i_reset_my_air_innovations_humidifierit5nr.pdfIn PDF document text
    • https://konilusikiwi.weebly.com/uploads/1/3/3/9/133986353/d1cf746.pdfIn PDF document text
    • http://termometr-medikal.site/download_sbk16_official_mobile_game_mod_apksywv8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457296/normal_5fe878916d977.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451221/normal_5fcd8dc5c3e53.pdfIn PDF document text
    • https://mobinefoju.weebly.com/uploads/1/3/1/3/131398425/8186494.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/24085823696.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/marketing_plan_template_free_word.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF127 5364 bytes
SHA-256: efbc95f8bcacaf87b54de50d0d4b0b3ace4c4f30cffc0b6c43922b2d22f70b2a
font_01_sfnt_off0001033e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1033E 10456 bytes
SHA-256: f23fa217514ae1ba94b738129078ce6ccd85735c59d02a2a720151640d97a808

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