Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f6ac2e2c7fad64…

MALICIOUS

PDF

54.2 KB Created: 2020-10-29 20:35:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b93be4926c6740840f8c6f4b13cf183 SHA-1: b9fe8a11619fddbd9612e7048e6b3c6f94f796e2 SHA-256: 95f6ac2e2c7fad64a42342bfacedea41c360ffe76ac1eb9213755c49d0b52c3f
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/123?keyword=the+iliad+book+1+questions+and+answers'. The ML classifier also flagged this PDF with high confidence. The embedded content, though heavily obfuscated, appears to contain the same malicious URL, suggesting the document's primary purpose is to lure the user to this external site.

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://ttraff.com/123?keyword=the+iliad+book+1+questions+and+answers
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1109957.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dutimajizowa/67914088732.pdf
    • https://uploads.strikinglycdn.com/files/d11a641d-0ab5-4d00-854c-3c1a125b6149/pivodupegofuvubujul.pdf
    • https://uploads.strikinglycdn.com/files/e23bfb78-77d1-43db-99c5-1fba94ae917f/54398713968.pdf
    • https://cdn.shopify.com/s/files/1/0498/4723/8818/files/accrual_accounting_vs_cash_accounting.pdf
    • https://uploads.strikinglycdn.com/files/5f566c27-778d-4c6e-9e05-e19d241edcd0/massage_san_anselmo.pdf
    • https://s3.amazonaws.com/zedilegol/maurices_return_policy_clearance.pdf
    • https://cdn.shopify.com/s/files/1/0476/9228/4070/files/13767273636.pdf
    • https://s3.amazonaws.com/fujadabez/kepomudatavululozugan.pdf
    • https://uploads.strikinglycdn.com/files/d7df540d-6387-47d6-a3f1-400a1e9e23a4/bukufepiti.pdf
    • https://s3.amazonaws.com/setaxilitozuko/articulos_definidos_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0480/9464/2340/files/horizontal_and_vertical_scroll_in_android_example.pdf
    • https://cdn.shopify.com/s/files/1/0503/8610/8590/files/unblocked_games_potty_racers_4.pdf
    • https://cdn.shopify.com/s/files/1/0437/9043/4456/files/ford_motor_company_annual_report.pdf
    • https://s3.amazonaws.com/xipavir/national_geographic_magazine_2017_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0266/9681/0672/files/unfortunately_the_process_android.process.gapps_has_stopped.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_off00006817.bin
0aebe779ae40921add19e61786a2e20170417b3a45d384f19454a1cbb9fe6046
pdf-font-stream PDF embedded font (sfnt) at offset 0x6817 14208 bytes
font_01_sfnt_off0000964f.bin
7a3ac7f54bd72d5fe128f4fc828d186a195805a4d8b60a576a5a0251558d6d91
pdf-font-stream PDF embedded font (sfnt) at offset 0x964F 5336 bytes
font_02_sfnt_off0000a87b.bin
21c6db3a381b35099bdb30c65680809dc3a482100cde4d0295c369d3be1b1c58
pdf-font-stream PDF embedded font (sfnt) at offset 0xA87B 10196 bytes