Malicious PDF — malware analysis report

Static analysis result for SHA-256 723d1dd03f3a28e1…

MALICIOUS

PDF

71.3 KB Created: 2021-06-03 00:08:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: eb75eaf428bb4c1d0482c1f5f1bc7af1 SHA-1: b00be76898134de1836790535270c69fcbbb20c2 SHA-256: 723d1dd03f3a28e18d527a01e97225b015cc10050b52770f6d48f2697608bc38
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-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://maypoin.ru/123?utm_term=december+2019+calendar+editable+template PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426062/normal_5ff8872c83945.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449777/normal_6023c5f7331a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406216/normal_5fc6ba4bc1246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485926/normal_601490a12971a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476593/normal_5ffb97877cb63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410448/normal_5fca488a83cd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454303/normal_604714153c2ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471969/normal_6017438fb9bbf.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/1c0d0669-44f7-4fe4-9f92-4c575d7c78e0/29167830518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/454801c2-47ff-48e6-9a73-55aaaf247696/12404319899.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67246f89-6999-4c5d-9ae9-78b3e47a9b20/twas_the_night_before_christmas_movie_seth_rogen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e59f59bd-ed8b-451c-baf8-1966a15e06b8/17059343847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a31eeadd-526d-4aa4-8e8b-1d00c20b7084/cazadores_de_sombras_renacimiento_2_epub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f468900-4cae-4947-859f-df5430d82365/sat_practice_test_10_answers_2020.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA85 5664 bytes
SHA-256: 9a8ccb315b34ba36ba8d15e72f6ad8cd8932c8ea6541484d5a85ec57be035f3d
font_01_sfnt_off0000eda9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA9 10092 bytes
SHA-256: 20e53930a4f2667300add0ce381a866f28ecb97257e7b5568804c67f7a4acf88

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