Malicious PDF — malware analysis report

Static analysis result for SHA-256 6699b44b02bf8a28…

MALICIOUS

PDF

86.9 KB Created: 2020-11-19 15:13:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: bb832a9100574e87dbd00b44d23ca235 SHA-1: 123ef2198b18b630def3f5db32613b8be027d47e SHA-256: 6699b44b02bf8a286dd963a4a6a8935d9267b75021db61d56f1d4ec4bb7d0d7f
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=ge+24944-v5+remote+codes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4450154/normal_5f9e84fa2c2a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446931/normal_5fa882500cd8f.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/828d664e-09db-4528-b59b-bc85afb7e709/1994_chevy_silverado_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdfd85f5-6c39-42b8-8f69-717686e5c023/venulelogalelazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8aabaad-4c31-483d-929d-628c98e6796e/6187002300.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab17204e-f219-4d2c-9c40-177ecf07c90b/el_poder_del_pensamiento_tenaz_norman_vincent_peale_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/squadron_bullet_hell_shooter_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f652c1d-77da-4a6f-b338-f103efaf4cf1/75885699098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c095bc3c-1950-4ee4-99be-7ffd4f6b5ac6/auditing_and_assurance_services_15th_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2166e479-1341-4e1f-ab7b-fc358385670e/40198146182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3edb5bce-b773-42f9-89f3-4e83844fe1dc/famejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61c37ce2-28da-4484-bc36-e93d57de73f2/24477110255.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/32583896127.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_off00010a86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A86 5100 bytes
SHA-256: 14703f115f19d0481be48cef60bc260a698f711e9f7b282fb10ba51fd7722999
font_01_sfnt_off00011c01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C01 10772 bytes
SHA-256: c607d9b38f7db8a893947e4b05a74cad921daaa5668acdb62680d60ac24c4166
font_02_sfnt_off000140b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140B4 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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