Malicious PDF — malware analysis report

Static analysis result for SHA-256 7448c10124f9b6c1…

MALICIOUS

PDF

61.5 KB Created: 2020-11-25 00:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9e7355fce4be894002ca98a542b81b3f SHA-1: 1651dc62766efe2dd0e1c50a903893c665d89f46 SHA-256: 7448c10124f9b6c1cf2d3e5a70fa083adac0b97a4cc2d4d8bba9c270780fbcc5
154 Risk Score

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://gettraff.ru/strik?utm_term=white+leather+dining+chairs+modern In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415745/normal_5f9cea792dd35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379723/normal_5fad7cebd564f.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/e6c893a4-d2fb-434d-a7da-fa96499ef8f2/14246272597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/944fc8cf-36f1-41c6-9295-3fbf84fe4c56/lozawoxuk.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/ge_stacked_washer_dryer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/lokemapigewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/908929a2-314c-433a-a88d-4d898ecba10a/13406717129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a6c3fdc-2c93-4969-8aa0-a5e3a3f9ae29/95317840823.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d99aa5d-8cdd-46d3-8686-cc76c3dd7f4a/1994_miata_manual_transmission_fluid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bec7d4a8-7fd8-4b8c-b744-d6dc507d3574/14473036647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac7509c-e34c-4eb8-93bb-d4746e7f542e/dragon_ball_z_xenoverse_2_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/argonauts_of_the_western_pacific.pdfIn PDF document text
    • https://s3.amazonaws.com/radaruropivoje/bufuvimufobinuxofudovi.pdfIn PDF document text
    • https://s3.amazonaws.com/luresimosip/mobile_county_probate_court_mailing_address.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3703b898-e99d-48d5-980f-355fd6ce0135/aimbot_xbox_360.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/31992968065.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_off0000b0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DA 5364 bytes
SHA-256: 7789247fd1f1ccb20ba07dcbb89af1175ebcdf4c4913bcc19d34c08557eec840
font_01_sfnt_off0000c2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F9 10936 bytes
SHA-256: 8f63fbcf31e6b51c6d60c0ddb181fa02f54db122e52edf81667ee8a97ebba5af