Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38db52642b43440…

MALICIOUS

PDF

43.4 KB Created: 2020-08-27 21:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02dbbbc3afd83a9b92e9f97af8f43000 SHA-1: c08fd46822efba14dae76a4c650dc3090412cd40 SHA-256: e38db52642b434409a6377228b841904b2265df76f871a48a909a44499cf64ab
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, indicating a link farm. The primary malicious URL is https://ttraff.club/pify?keyword=descargar+nckdongle+androidmtk+2.+5., which is likely used to distribute further malicious content. The document body, though heavily obfuscated, contains references to software downloads, aligning with the malicious link's apparent purpose.

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.
  • 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.
  • 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.club/pify?keyword=descargar+nckdongle+androidmtk+2.+5
    • http://files.hammanrealestate.net/uploads/1/3/1/3/131380008/supebukejisada.pdf
    • http://files.gospeltrumpet.net/uploads/1/3/0/7/130739318/a19b58.pdf
    • http://files.murciashoponline.com/uploads/1/3/0/9/130970001/wivilu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6625/2703/files/comment_faire_un_diagramme_circulaire_sur_word.pdf
    • https://cdn.shopify.com/s/files/1/0449/4458/8959/files/bangalore_central_university_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/4451/1645/files/carbonato_de_litio_bula.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/vijokaxewekatevim.pdf
    • https://cdn.shopify.com/s/files/1/0433/6074/7688/files/5853953854.pdf
    • https://cdn.shopify.com/s/files/1/0431/2629/2629/files/fictitious_company_names.pdf
    • https://cdn.shopify.com/s/files/1/0431/0122/5114/files/takesixaji.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/ruberelu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7916/3285/files/razezoxijinimuxoxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5366/2876/files/mapa_turistico_andalucia.pdf
    • https://cdn.shopify.com/s/files/1/0432/1656/8482/files/wiz_khalifa_mp_3.pdf
    • https://cdn.shopify.com/s/files/1/0433/7909/7758/files/petojomelidadu.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000488b.bin
2c11c523d06f3c547e333fa56a916c6cb2d2717d477d1de7caf33fd4481d00b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x488B 5400 bytes
font_01_sfnt_off00005ad8.bin
4711a5b7b96467a52e7b4680d03783eac17d735b93bd46c48b0210540b72a0fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD8 9852 bytes
font_02_sfnt_off00007cec.bin
f469c5aa689aa4c1965481b78cfaebbf1c3ebdad2306c7067134b7b4aaa0addd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEC 16164 bytes
font_03_sfnt_off000091e5.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91E5 4324 bytes

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