Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7a3192eb2e1e5c…

MALICIOUS

PDF

81.0 KB Created: 2020-12-28 02:35:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ef4f0529cc21d8ab86ce14cf016292a0 SHA-1: 9d129ba87ba4e86cc4fb3c83dbd25298ce4b9597 SHA-256: 2b7a3192eb2e1e5c8a9b04f0de210741081b69e42ca12c4da6b257988411e372
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'traffset.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to 'wow classic beta', suggesting a lure to entice users to click the malicious link.

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://traffset.ru/123?utm_term=how+to+get+into+wow+classic+beta PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4401982/normal_5fc534691820e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490953/normal_5fe0e6a942810.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393180/normal_5fc6b34a9189a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366956/normal_5fbd5757d441b.pdfIn PDF document text
    • https://damobupakul.weebly.com/uploads/1/3/1/4/131453350/zeworezipex-xadudoruz.pdfIn PDF document text
    • https://cdn.sqhk.co/mozejipakas/5iarV0S/ringtone_maker_youtube_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410201/normal_5fd1f052bde50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379482/normal_5f8e3ce45cf52.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/0d000682-47ca-4b80-a017-0261e3bdb934/rupot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97407a67-d4e3-4f03-bd19-db75e3921b86/82679924336.pdfIn PDF document text
    • https://s3.amazonaws.com/juzalizuvar/faxakojabivesawamizewi.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE3 6744 bytes
SHA-256: 8187145963fbf8e0b7977f93bb9cbfc296fb812f6e2b6f40a3c8d31ca5a797a4
font_01_sfnt_off0000ffca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCA 5064 bytes
SHA-256: 25bddc85a95eb7197cb0418234609fe5b09ecd7cd4732ca8bcf94c61a4e51edd
font_02_sfnt_off00011133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11133 10956 bytes
SHA-256: c493b640e6c4d803894d84c56c4b7301e7284d82a6467beadc49a8ae02e4bc0a

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