Malicious PDF — malware analysis report

Static analysis result for SHA-256 519257be197720a9…

MALICIOUS

PDF

40.6 KB Created: 2020-09-09 12:07:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a9c55ca01afa056a88b88a3fda4ae0e SHA-1: 054ba725bb98c963eb2802c4b6e3ab2a0716c55b SHA-256: 519257be197720a97403ebc41b11b9039a3ccbb496fe71dc6b4ed8e89d721d5f
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to lure users to a malicious URL. The document body and embedded artifacts are heavily obfuscated, but the presence of a critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing strongly indicates a phishing or malware delivery attempt. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=assassin%2527+s+creed+identity+obb+zip
    • https://cdn.shopify.com/s/files/1/0433/4682/1278/files/48410533840.pdf
    • https://cdn.shopify.com/s/files/1/0463/0645/9808/files/pulelemuleb.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/gogotimetaxut.pdf
    • https://static.usrfiles.com/ugd/b5472a_9c22a391251e4cf98eb81a5603dc9e5b.pdf
    • https://static.usrfiles.com/ugd/32777b_a2602923d9a94069adc71207149c4627.pdf
    • https://static.usrfiles.com/ugd/f80014_7f380a598ea24d4c9439dfd8f5324b4d.pdf
    • https://static.usrfiles.com/ugd/1f2646_6df4d9c54d9b4c20a0b871ea15ffec10.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ba1d084c5234a77990e9413f8821f85.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/bwwm_books.pdf
    • https://cdn.shopify.com/s/files/1/0460/7098/8964/files/list_worksheets_in_workbook_vba.pdf
    • https://cdn.shopify.com/s/files/1/0450/3601/1678/files/levavo.pdf
    • https://static.usrfiles.com/ugd/b6bf5b_bf2995c04957480cb9053319c436a98a.pdf
    • https://static.usrfiles.com/ugd/12dc78_a9f4334679164790836319711c6e0f83.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060cf.bin
c141008917b434bfc58dc1837b0a1fa74e667e981c31c0565e79579f3b58fb4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CF 5352 bytes
font_01_sfnt_off00007320.bin
f5c4761004417acbfade6988ad207a206f5940330c15d2e4ee225300bf1b1b70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7320 10048 bytes

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