Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ddc4f41a02b25a…

MALICIOUS

PDF

55.7 KB Created: 2020-09-17 00:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2a72d33377a6fdb32a3292e11db7d61 SHA-1: 2211faa43e89628081ffe64393addf3a5a9523e7 SHA-256: 00ddc4f41a02b25abaf2559b97ac47fa86a2f6a1ff4154ea6ff0e02cc5cfd773
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially obfuscated, includes the URL 'https://ttraff.me/wix?keyword=a+love+contract+with+the+devil+naver', suggesting a lure to a malicious site. The presence of a large number of external PDF links further indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.me/wix?keyword=a+love+contract+with+the+devil+naver
    • http://files.deannabaldi.com/uploads/1/3/1/4/131407709/5e6050530100.pdf
    • http://nebus.karamfamily.ca/uploads/1/3/0/7/130775990/302b80df43d5d1d.pdf
    • http://tusawut.tuiwalk.com/uploads/1/3/0/7/130776131/48b393c368d.pdf
    • http://xekanu.mobilessurvivors.com/uploads/1/3/0/9/130969352/86db4d42edce1c0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://70a47a7e-39fb-4bb0-af94-9660780f00d0.filesusr.com/ugd/9bd82e_4e61f1a64aea4fd49b2ec70b72eb0dc9.pdf?index=true
    • https://4f7bffa3-fa43-4837-914c-16218cc224e6.filesusr.com/ugd/ab922d_271fcfa3b25140a68eede0b36bb25f24.pdf?index=true
    • https://a5c5f4e5-9fb0-48f8-aff7-a3db744a6e0f.filesusr.com/ugd/cec570_365224790d1246159b1e7521b2fbe0fd.pdf?index=true
    • https://a5aab223-06d3-4fe6-8b73-14fe1f70821c.filesusr.com/ugd/8e7730_7930814364ec4aa5a03775ff180d4ebf.pdf?index=true
    • https://cb18efab-7774-4680-b2ad-567e8808cf0d.filesusr.com/ugd/5de1df_f3ffec75208b40cdbe112658560cd7f2.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/1044/8795/files/teperasoridewurowez.pdf
    • https://3f8fddcf-46ea-4724-9160-c1b84ecf6658.filesusr.com/ugd/003b86_95ea7595ea3a478ea4798bcfe53eee29.pdf?index=true
    • https://b7cefcd4-c935-4739-bcb5-470b9a8a3432.filesusr.com/ugd/f515ca_1465ac816c284b6598ff28eb0fab2fd8.pdf?index=true
    • https://d7ffc047-bdea-40aa-90ae-1f4ce427d50e.filesusr.com/ugd/078c79_5dca66a75e0046ee83a3b1897218f357.pdf?index=true
    • https://cb98a6e7-2b4d-41a7-94dc-7765a000ad79.filesusr.com/ugd/3e7897_af00e78bcdfc47b9ab221be8c64ce0da.pdf?index=true
    • https://6d035dc3-8e9b-4116-a218-9fa5913f2be4.filesusr.com/ugd/7921d2_50cbfa9d581442ec9a3b04c5ff71da5d.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ac5.bin
8826a40524e25f2d65f3ead96ed7be43efcfc6407ba3788470a8424bf39209fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC5 7768 bytes
font_01_sfnt_off0000748e.bin
ff3cc5940abd6775663af437f6142065a5ffd63e86f1cdec1ba502b824b27431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x748E 4992 bytes
font_02_sfnt_off00008593.bin
28ce3c5ddc4af68cf6d1c5f4fd93c406c9d928499b5c605350e59bafb027c6f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8593 14528 bytes
font_03_sfnt_off0000b39f.bin
fa8e1a3c0a102bd3d42fdab61baae5a8d64a7eece1c31ef348620bc44cc1904b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB39F 17900 bytes

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