Malicious PDF — malware analysis report

Static analysis result for SHA-256 53ed77a89dc1cbc6…

MALICIOUS

PDF

106.2 KB Created: 2020-12-06 07:33:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 06111ed48a0b04b99c4233e684758b2e SHA-1: d93cb85073657cb54025997bbcc3bc738e043921 SHA-256: 53ed77a89dc1cbc6cd33f8bb8465900b512cd2c5f4fa3b098317c73d3299eb92
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 0.9987

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
  • 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://ggtraff.ru/strik?utm_term=hp+silver+fusion+i3+precio In 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://static1.squarespace.com/static/5fc0e60b24b06a7eb3ff207b/t/5fc14cd2173fb5383bd29cec/1606503635222/message_blocking_is_active_iphone_7.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59cfe2e537a05ef29188a/t/5fc70bfbc953717e09cf61c8/1606880251203/watching_fish_eating_fish_in_dreams.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92d4d06b-7ce4-4e90-9c2c-90ea49477cf4/district_social_nyc_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a325eab5-68e3-45b7-b9f5-9152b82d2cc2/vijax.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc15332cd1e280355d72b07/t/5fc39632145a8629dc1f097d/1606653496889/rosiwobexuderatimubanov.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54fb7403f5353fdb2d39b/t/5fcbd36f1415195da0905b4c/1607193455753/plex_windows_client.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc19ab11452f90b7fea4d21/t/5fc511e93c02f22b9dacd6f3/1606750701197/sana_tu_vida_louise_hay_youtube.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b1f1791da6493f6c03a4/t/5fcc518ca87f9f1b19ce45a9/1607225740364/mifid.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17a540b6b03258f39a641/t/5fc6763d3485235c86a632c1/1606841917729/electrical_panel_cost_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/110a3a4f-1c2e-4784-aa3a-2c6d12889c4b/20664951234.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd064fef3361272aed614d/1606223439474/the_infinite_sea_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ce745e8e827d429a49c0/t/5fc9bf3452b5874c8590198f/1607057205277/vafojut.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ba3b0a2757459be1f9cb/t/5fc75be8a038a451bcec31ad/1606900713329/41645803727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c18aae6-e780-4d1f-99e2-16607d1339af/zokasubigalaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e3d6f3c-dd31-4e29-b723-c7a269a4c845/bezeworam.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAD 7228 bytes
SHA-256: 60d8043acdad52533b3fc290b2009c57c8a98ef11829348d4f789e7f1f6b6006
font_01_sfnt_off00012f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F58 4788 bytes
SHA-256: 979968137a2b3e5234f6c07d1c8ed701f2fdf500e9718e1953f5c90d93d24f3e
font_02_sfnt_off00013f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F9B 2244 bytes
SHA-256: ee9c0a79da11ee2411d39862bcde7d817d464aa9bc272133f3f91fcfe6a5ec81
font_03_sfnt_off000149cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149CF 13668 bytes
SHA-256: cd0bfc3aaea422d304db445a82aa77bf7a5cf89b1bf2518bf2e56ace6bd9b173
font_04_sfnt_off00017493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17493 16392 bytes
SHA-256: fdd14e52e4790fd7c93797a82fef64b29a952dcad8e41543988700e167b9f07e
font_05_sfnt_off00018ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18AB1 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c