Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac9860e2a6daff8e…

MALICIOUS

PDF

77.2 KB Created: 2021-04-25 06:13:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 15aeee0e52ce5e702eda3715317f77a3 SHA-1: d9256059c86c1f65180efc856b80c270be9f4df3 SHA-256: ac9860e2a6daff8e34d053a1fa3f52b6d98477e771964ef39bc035d9c6916552
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/strik?utm_term=asp.net+entity+framework+tutorial+for+beginners PDF link annotation
    • http://pss77.ru/sperry_dm-350a_multimeterfd7co.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/roman_catholicism_loraine_boettner.pdfIn PDF document text
    • http://bella24.xyz/how_to_use_charter_remote_for_tv2uowp.pdfIn PDF document text
    • http://austritkfa.com/gibofw9tfo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390385/normal_5fdc4878b5257.pdfIn PDF document text
    • http://rocketdocs.us/vuximakivotewizilubxv7kd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391340/normal_5fe5370001c75.pdfIn PDF document text
    • http://mizizufiku.mywebcommunity.org/aspiration_pneumonitis_and_aspiration_pneumonia.pdfIn PDF document text
    • http://badodamibevije.iblogger.org/harbor_breeze_ceiling_fan_remote_reset.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411714/normal_5fc935b5b77c7.pdfIn PDF document text
    • http://kobopez.mygamesonline.org/92256413095.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/wikurixobelu/zipadeva.pdfIn PDF document text
    • http://girakes.rf.gd/784633660.pdfIn PDF document text
    • http://fujifadufat.rf.gd/butterball_turkey_fryer_xl_oil_capacity.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/hp_b_ed_examination_form_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/fonewabejivipuketinut.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/bulk_powders_informed_whey_review.pdfIn PDF document text
    • http://tasefabomodewiv.epizy.com/chunks_malayalam_film_songs_free.pdfIn PDF document text
    • http://divogidiguxofib.epizy.com/wagimer.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/73486149691.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/android_studio_offline_installer_64_bit.pdfIn PDF document text
    • http://semowomeso.onlinewebshop.net/97961025326.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/34662315672.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/baal_veer_episode_tinyjuke.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_off0000eca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA5 5640 bytes
SHA-256: cbf5b5e3549f4524cf892c79ec3a9fdae0fb60855e2826a1bd1f45a69d17bb05
font_01_sfnt_off0000ffea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEA 11552 bytes
SHA-256: b8b3dcd34cbd215d43dbe1b7c67d480e28c02f398e98f6731c9030aa4344d2c9

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