Malicious PDF — malware analysis report

Static analysis result for SHA-256 720953b54d4c9419…

MALICIOUS

PDF

77.6 KB Created: 2020-12-28 09:16:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 20d4dbdb7a985b8a8579ea4fd6ae30ff SHA-1: 925566c3eec61d7083a1fc8e6411b2cd75d59d7e SHA-256: 720953b54d4c9419b5ee71e4d8fcedacbb2689af3590a0d3a14496afb4de0067
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://trafftec.ru/strik?utm_term=alien+shooter+game+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420610/normal_5fc574845cf15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367617/normal_5fa344f16295e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459777/normal_5fc3050d8b51f.pdfIn PDF document text
    • https://cdn.sqhk.co/majatuto/jdihYfm/76260468166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_5fb6d3dae8027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488581/normal_5fa9b33ed1463.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379731/normal_5fc496605a287.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/b4b89aa5-9577-4151-b1f8-f1d01f51d963/servsafe_manager_test_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb32a52a-d0e7-4e88-816e-ecef86ac6def/26411444476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8967c2c-1218-4cec-816a-fdbefc734d7f/lujebifewow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb4780eb-bf92-43eb-8094-9ad02d869802/55753206657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0467d65-61d9-4480-ad77-4fc1c24ad34c/tin_phng_iu_ting_anh_l_g.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38847ab0-b22a-428c-8ccc-b8258fc6ab1c/gmat_guide_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96b320e2-1ba0-4878-bf9d-856a8ca861f4/big_fish_eat_little_fish_saying.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00161aee-5758-45c3-801b-e8f9f5810fdc/labafafumanikonu.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_off0000f34c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34C 5172 bytes
SHA-256: 611ce5bb8683f8f4072d77fcf8986857036fc7c3e4d589a38dbb05da3a32fecd
font_01_sfnt_off000104b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B6 11364 bytes
SHA-256: 1a2d9be78600097ec114a405cbf1bd0f691625cf02bb4ebd7999913dfe97487e

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