Malicious PDF — malware analysis report

Static analysis result for SHA-256 89aec47c3a30a400…

MALICIOUS

PDF

65.1 KB Created: 2020-11-18 12:58:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: bc86a3be8d6a12ba0317e61321c1aad1 SHA-1: b9058a03b32239f78b08983180ed6363efbdad57 SHA-256: 89aec47c3a30a400379ca4893c064a569d268c5357eb78ae150a26ae5787b637
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of the external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=d%2526d+3.5+draconomicon+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f95c26e32a85.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/mr._wilsons_cabinet_of_wonder.pdfIn PDF document text
    • https://s3.amazonaws.com/mupakijivuruzim/17680564956.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ab5955a-d59c-430b-a218-ec0bc82bd981/ruduvekejoradi.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/wolfgang_puck_deep_fryer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/gogapumowi.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/first_aid_usmle_step_2.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/juxelokasowetikuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a524af2-7bb3-4f2e-8dd8-8b49635e974a/jiraludulu.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/data_comparison_between_two_excel_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/59631311858.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_off0000c683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC683 4156 bytes
SHA-256: 3c306e0ec94285d13e87c04bb9d91e20e74eae243bb960c666b01ded030faf74
font_01_sfnt_off0000d4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B0 10296 bytes
SHA-256: 312c6dfba9ae713b768f0b715d5c36cf620830f385267a3e5664ccde2435b8fa