Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad06970d5b5cf733…

MALICIOUS

PDF

40.5 KB Created: 2020-11-06 10:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6af792d077f01e787780b1bb20710076 SHA-1: e0fde06212748551cc79c975cd8b7b5981d3f9d1 SHA-256: ad06970d5b5cf733b7009a91b7d6e56e40df16744c1166aa4f04407507284af6
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggraff.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded link suggest an attempt to lure the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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/123?keyword=bogus+meaning+in+french
    • https://pefobasor.weebly.com/uploads/1/3/4/1/134131397/7937120.pdf
    • https://runebipunozup.weebly.com/uploads/1/3/1/4/131406604/jajopikalo_lusov.pdf
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/sulag_beramezobam_jevukisu_zajifetapog.pdf
    • https://fitakizegeva.weebly.com/uploads/1/3/3/9/133999514/0e9ddd59.pdf
    • https://bafuvaki.weebly.com/uploads/1/3/4/3/134336870/rolowuzotefame_vurelavekojavuj_deterotokuwugu_towobagoxa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/piwanisaj/95496824779.pdf
    • https://s3.amazonaws.com/gafedupeba/keritokuk.pdf
    • https://uploads.strikinglycdn.com/files/e8aded49-8325-426e-9c49-5b00fd39dbf8/atkinson_riding_academy_nh.pdf
    • https://s3.amazonaws.com/fufaragebo/breast_cancer_ribbon_tattoo_images.pdf
    • https://s3.amazonaws.com/dutimajizowa/13_days_in_hell_unblocked_games_google_sites.pdf
    • https://s3.amazonaws.com/zonebon/victim_impact_statement_example_car_accident.pdf
    • https://s3.amazonaws.com/kigavanus/tajedunupewosikorabobo.pdf
    • https://cdn.shopify.com/s/files/1/0499/3315/6504/files/2255159279.pdf
    • https://cdn.shopify.com/s/files/1/0483/6268/4567/files/malukomemakemipokure.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005371.bin
b0299174c4a503e320b47feb2076ca39d607fd604b7dbe3133fcbe6d226edb15
pdf-font-stream PDF embedded font (sfnt) at offset 0x5371 2920 bytes
font_01_sfnt_off00005dc9.bin
2edaa2c91d772abe64095675879c293276c00fada68a771400167a224b26e682
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC9 5312 bytes
font_02_sfnt_off00006fb5.bin
0273f8841865b97b5a0219cb5065ff694bf57f9dd90e77d19183300f2a74e461
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB5 11616 bytes