Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d92c3d3af29d099…

MALICIOUS

PDF

66.0 KB Created: 2020-12-19 19:30:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4d924443a62d20a3444347b1b5090991 SHA-1: 6586d77e87c176b74619869a95f9bc69892a68a7 SHA-256: 6d92c3d3af29d099b36aca039eda90281e3edbf8efe3366074e7a24f74b63287
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 0.9998

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://traffine.ru/strik?utm_term=to+kill+a+mockingbird+chapter+16+literary+devices PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415782/normal_5fc79364532be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457011/normal_5fb7bf1e3ebd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444370/normal_5fa7c6ba9f2d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503617/normal_5fd0d91b74d78.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf49caa97599144eed739d/1606371787018/1923_morgan_silver_dollar_value_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/91177163872.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/stick_rpg_2_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/50291325627.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/88525898015.pdfIn PDF document text
    • https://s3.amazonaws.com/konimowu/13524107831.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc9da7ff99f865bfec24a0/t/5fdcdac142e81c390ad555ad/1608309441800/food_chains_and_food_webs_worksheet_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6a5c31452f90b7f0d1139/t/5fc9d57dcf87d0256fee26d0/1607062909823/arcade_fire_reflektor_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/omicron_cmc_256_plus_software.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/ansys_spaceclaim_19._2.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/44146350078.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc306b292c50b1a1e856a3b/t/5fc5eae0eaf37e3b6468c0e9/1606806252057/movedejaxidu.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_off0000c52f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC52F 6008 bytes
SHA-256: d280052f2f272622def76bf9bec5dbfd1c5007aeed7fa7e29774521efb704553
font_01_sfnt_off0000d97d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97D 9852 bytes
SHA-256: 331d9a467f34d4a79d5acdf3f441492a293162fd92b69bfa828cb774e82d3dce

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