Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ce89c2d56f01b4…

MALICIOUS

PDF

40.8 KB Created: 2020-10-30 08:38:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6de189d2cab9c7f12be4d7f58069b2a SHA-1: 11ec01253d903cef0961d8f8b70bd12491212584 SHA-256: d1ce89c2d56f01b4a2fee8c54f69044f9c241be19b6e533b3e9ed35c6622b6e3
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, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to `https://ttraff.com/123?keyword=icao+annex+17+tentang`, which is likely used to redirect the user to a malicious site or download further malware.

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=icao+annex+17+tentang
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sugaguxagu/the_lying_game_cast.pdf
    • https://cdn.shopify.com/s/files/1/0504/3919/2765/files/zadatixuzazewe.pdf
    • https://cdn.shopify.com/s/files/1/0501/8887/8012/files/mazzer_kony_electronic_manual.pdf
    • https://s3.amazonaws.com/zakunafu/scarlet_clicks_strategy_2018.pdf
    • https://cdn.shopify.com/s/files/1/0500/3119/8380/files/desventajas_de_los_alimentos_transgenicos.pdf
    • https://s3.amazonaws.com/dapekufoxiraku/43469212318.pdf
    • https://s3.amazonaws.com/jamokaroxoj/buzikodopekado.pdf
    • https://s3.amazonaws.com/wenobagupexekap/agrobacterium_radiobacter.pdf
    • https://uploads.strikinglycdn.com/files/d004d9ca-468a-40ff-b6ca-a03db8271239/rumuxajap.pdf
    • https://s3.amazonaws.com/sugaguxagu/45415213798.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063db.bin
5e82286b2870955976d3a7e74079bfba9c339e1603955b9899fdb0ecf0391cec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63DB 4800 bytes
font_01_sfnt_off0000745d.bin
b27ec111dbceb5037f4d9d290cad3db25fef6ec3b74441de8e8f956a565f2fb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745D 10292 bytes

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