Malicious PDF — malware analysis report

Static analysis result for SHA-256 00eaec43524d549c…

MALICIOUS

PDF

34.9 KB Created: 2020-09-02 23:06:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef83a361a5e708456a20b1414d926d00 SHA-1: 3de571154068e25a703ec59715d985f35b498281 SHA-256: 00eaec43524d549c03f899a077f967f0b868d7f6af791cbe44eda032549b7d31
154 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.cc/wix?keyword=tamilrockers+tamil+full+movies++2018'. The document body, though heavily obfuscated, appears to be a lure related to movie downloads, aiming to trick users into visiting malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/wix?keyword=tamilrockers+tamil+full+movies++2018
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/bd7df1_1b7cf30922c444bfbf3db0fa466c76ba.pdf
    • https://static.usrfiles.com/ugd/cc089a_bd68be4a88ef4793aa2bb0a4b1365aca.pdf
    • https://static.usrfiles.com/ugd/97634b_f24a6a04dcde4097a95a060ea22e254f.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc094715d9b24a4fb7148df98740b45c.pdf
    • https://static.usrfiles.com/ugd/05301a_dd2a14ee2f1a4fd4b00a3a5507039d5b.pdf
    • https://static.usrfiles.com/ugd/b8c837_375c03069b3d4bc0bc11542149eb8ceb.pdf
    • https://static.usrfiles.com/ugd/430cb2_91cd0d2a6df84f88bd3b473a6efe9994.pdf
    • https://static.usrfiles.com/ugd/4826f5_243245939d734c6d961bcf58b6835126.pdf
    • https://static.usrfiles.com/ugd/822ecd_67905a5c21b64a878120948b2a65d008.pdf
    • https://static.usrfiles.com/ugd/57c819_fea64aac614d4766a191cf1cc24d3f25.pdf
    • https://static.usrfiles.com/ugd/409ca8_00b110c76dad44058b8dd56450d13e5a.pdf
    • https://cdn.shopify.com/s/files/1/0434/1419/2285/files/gifalovalaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2335/1458/files/38456770532.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0429/files/cambridge_primary_science_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/9367/1590/files/multisim_14_download_full.pdf
    • https://cdn.shopify.com/s/files/1/0428/6667/1782/files/ubqari_magazine_feb_2020.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_off00004b63.bin
0939d8fc74eaf3997844b97f36178d7365448454f727cab5edfe597a2f386676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B63 5620 bytes
font_01_sfnt_off00005e73.bin
448dc640d41ac57a780e868a0aea92433a9491816d288aa88301128c38b23185		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E73 9492 bytes

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