Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c5a25c0d14efff1…

MALICIOUS

PDF

71.3 KB Created: 2021-01-04 01:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 4a5e8fa8f5ba6abb56a1a38ae6eec44b SHA-1: 15dfee8372075628c8a4de70051860bb9ccec65e SHA-256: 9c5a25c0d14efff1640546161cbf4e98b1660fd87b1120c86d85fc8f312a1146
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that, when clicked, leads to a suspicious domain. Heuristics indicate this is a phishing attempt, and ClamAV detection confirms it as a malicious PDF. The ML classifier also strongly flagged this PDF as malicious, suggesting it's designed to trick users into downloading further malware or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/aws?utm_term=newspaper+ad+design+templates+free PDF link annotation
    • https://cdn.sqhk.co/tiwumixe/XgeuUoN/walking_dead_cast_season_9_lydia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380867/normal_5fa162866c8c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409393/normal_5fd824567231a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409103/normal_5fb7039898ea7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469350/normal_5fc940981afdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448550/normal_5fc3c4447579b.pdfIn PDF document text
    • https://cdn.sqhk.co/xewumoxu/0gr05J9/govokafopazufatoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_5f9d1cb0556aa.pdfIn PDF document text
    • https://cdn.sqhk.co/nunewole/NiigfMx/all_arcade_games_in_one_machine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2dc010a-bf8e-4be2-bb6b-57a82eed8930/serefosilaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76bd0ba1-e3e2-47c0-bd5c-00d65714b5df/the_dialectical_behavior_therapy_skills_workbook_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92e0e9bf-a6b5-4635-a02b-b26ccbc56d59/kamigubatilakoji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3247de3a-64cc-4fbb-91ee-829474d13aaa/botawolotedez.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_off0000d9cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CD 5424 bytes
SHA-256: 51d5278d43e714db321027cf322bbc02c881e3ae5480c6970e423afe94593142
font_01_sfnt_off0000ec43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC43 10656 bytes
SHA-256: ff90fae44677dcece14a26bf27d06e42da1658c71bb34414620efb4fdc519365

Open this report in the interactive analyzer, or submit your own file for analysis.