Malicious PDF — malware analysis report

Static analysis result for SHA-256 2730fb208ea3576a…

MALICIOUS

PDF

74.8 KB Created: 2021-01-01 08:08:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: caab5ef10e3baeb6c65b417eef279777 SHA-1: 1b16be6623a86c85b18fcb6f3d76d12c4638f831 SHA-256: 2730fb208ea3576a7a4ed99651ed3e0a5fe7c6224e91881a25997415fea52f83
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://trafffe.ru/strik?utm_term=free+clip+art+heart+shape+border PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449774/normal_5fcd6f5217c93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372983/normal_5fac2d55a22a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456372/normal_5feb50cc9f493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483867/normal_5fba99d93482e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/076aa7fe-b57e-4ddf-aa38-df66f32257b4/open_ps2_loader_0.9.5_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04a77c18-0c5e-4d06-8704-a94c227b5c3d/2166622969.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/endometrial_cancer_diagnosis_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/606ff588-3fa5-458b-9ce3-29e58bb89cdf/memogemubuvuruvov.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/84229583767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7693014e-1145-477b-b628-be3a2806be23/68335323968.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/mevovuduzugulokixamosisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/188bc348-d7bd-413c-a5ae-a3fc5dab321b/principles_of_engineering_economic_analysis_solutions_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA8 4940 bytes
SHA-256: 8ce719bd4ed19fe65dd2f12e12a01683f98e580977f4cb95557790c44d6e6706
font_01_sfnt_off0000ec6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6E 10496 bytes
SHA-256: 660dd312dba00e46d0868c5415cd3f1d133b1cc0757a24b5b3f61a7283a55c64
font_02_sfnt_off00011037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11037 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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