Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c862ad37047e05…

MALICIOUS

PDF

51.8 KB Created: 2020-08-31 11:16:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be29bc14e8f14996699890f6d1fa92c9 SHA-1: 9ae8d0e17c7310d4259b2788faf9b1588ec21d7f SHA-256: e9c862ad37047e05885d2c2d514117ec1a1849c97ab73a6a8241d44104ceea46
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, includes the target URL and appears to be a lure related to 'quantitative research'. The presence of a link farm and a malicious redirector strongly suggests a phishing or scam attempt. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.me/wix?keyword=que+es+la+investigacion+cuantitativa
    • https://cdn.shopify.com/s/files/1/0432/9432/6939/files/fujid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4504/files/vertical_line_test_notes.pdf
    • https://cdn.shopify.com/s/files/1/0440/5339/7654/files/vorevo.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_f1c327dd5688445593a1c7e947c008d4.pdf
    • https://static.usrfiles.com/ugd/0d089b_eb8e29ea52244c9aae1ef12dae86ab1e.pdf
    • https://static.usrfiles.com/ugd/aff7ca_7454d82cf0ec4846a252a2f62c62210f.pdf
    • https://static.usrfiles.com/ugd/a2e20a_9bd60fbf691a470695969eb43550fe1f.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd6761519cde4555960332b4d5ed1932.pdf
    • https://static.usrfiles.com/ugd/b11f6d_9d5502dc351f4ed49758c1d24a8b5211.pdf
    • https://static.usrfiles.com/ugd/05301a_cbbd2ed2609e4bd0a189fe4a67189b19.pdf
    • https://static.usrfiles.com/ugd/1df9ea_430ba0130ab148d9b5cb5ed97934bc85.pdf
    • https://static.usrfiles.com/ugd/b8c837_893dac0340ab4e1f8b41f172dcd4a74f.pdf
    • https://static.usrfiles.com/ugd/921909_e8c75fec51284324ac1730dbb4f94e1e.pdf
    • https://static.usrfiles.com/ugd/b91566_9a0a0f92b3f942fcaa82398947663c0b.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007620.bin
63a354fb3338184a24293c48454c9854ded024243214e787fd1632fddc569fdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7620 4872 bytes
font_01_sfnt_off000086cc.bin
883843940b50d3eb222f5366249af115b029760e7329b9ce64fd6f0f447852af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86CC 14432 bytes
font_02_sfnt_off0000b2b6.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2B6 4324 bytes

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