Malicious PDF — malware analysis report

Static analysis result for SHA-256 63759726850649a6…

MALICIOUS

PDF

47.0 KB Created: 2020-08-02 19:17:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 106fb09948535c70908b75d333a77743 SHA-1: b5ad6c3d7a97d0bacbc3dde6cf0fd71df2810a70 SHA-256: 63759726850649a68226b0cb01b311829e854b632d9e2f40a5842cc19155ea4a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=rome+total+war+wiki'. This suggests the document is designed to trick users into visiting malicious websites, likely for phishing or malware distribution. The presence of a large number of external PDF links also indicates a link farm strategy, potentially for SEO manipulation or to obscure the malicious redirector.

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/pify?keyword=rome+total+war+wiki
    • http://files.orchardhillestate.com/uploads/1/3/2/6/132682640/xunuva_demodirug.pdf
    • http://files.ramonbullard.com/uploads/1/3/2/7/132740435/xopobivagozapun.pdf
    • http://files.retrozonearcade.com/uploads/1/3/1/0/131070317/2196908.pdf
    • http://files.kandcmusic.com/uploads/1/3/0/7/130775633/0c21dd596f0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdf
    • https://cdn.shopify.com/s/files/1/0435/4677/1607/files/vutesusofig.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8764/files/58426454164.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/19655418899.pdf
    • https://cdn.shopify.com/s/files/1/0430/3516/4835/files/61885175980.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/77871707893.pdf
    • https://cdn.shopify.com/s/files/1/0429/4718/2759/files/34686696775.pdf
    • https://cdn.shopify.com/s/files/1/0433/0999/0043/files/582809153.pdf
    • https://cdn.shopify.com/s/files/1/0431/0397/7634/files/dotubuwelad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/31989275411.pdf
    • https://cdn.shopify.com/s/files/1/0435/1895/1576/files/fumetarivege.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_off00007ae3.bin
8b62e9072df2959a0c0c2ceaff1460ffd1c408d638adaba56970379f881ea3ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE3 4816 bytes
font_01_sfnt_off00008b3f.bin
366c6c4e88012c6acba5f8edaa8941164116525a92b0bb5b9d78bf13c92f4c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3F 10696 bytes

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