Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ffbca53d5479289…

MALICIOUS

PDF

64.3 KB Created: 2020-11-11 03:03:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 802bd65683d0c726879c5a598fd3659e SHA-1: 905cca6097a6855dfd12d9774db014b844989e29 SHA-256: 4ffbca53d5479289488cf5de768f191304e5ad7461861cfb6abed8be74f0def1
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://trafficel.ru/aws?keyword=d+d+5e+monster+manual+pdf+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f965f28b7224.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5f9b275895f54.pdfIn PDF document text
    • https://tijujuvuxerupuz.weebly.com/uploads/1/3/4/2/134236121/dopikikiz_waretevidegidim_bawix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372682/normal_5f8ccf3784904.pdfIn PDF document text
    • https://lijonalorobu.weebly.com/uploads/1/3/4/3/134340538/4c4b49f22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_5f8bf70523c94.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/9200d5ce-490a-40b0-8b71-29365ce47410/kanefusasimagejoji.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/punawetomafafutulufobisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/011b93e9-134e-474a-8955-aea01bb36273/96049820635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c7137a0-a75d-47a7-b391-b8b9b4885dcb/router_base_for_hinge_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02af26b5-8ef4-4f18-91b1-3c91095321c1/wkbn_tv_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0266acbd-5af4-4401-bcaf-054cfe4f7f98/zikukewiwevigebazemogu.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_off0000bc88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC88 5404 bytes
SHA-256: e70178c1305493c7f84b584a9fa72a86ba8e7a0bf481a0bd3b7e68bbc4dc92c8
font_01_sfnt_off0000cee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE9 10676 bytes
SHA-256: 5da2e945a546d1d05c3b575880ec960559e117193ece2e96a811e2d17081ce02

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