Malicious PDF — malware analysis report

Static analysis result for SHA-256 a14843eb23b6c643…

MALICIOUS

PDF

40.0 KB Created: 2020-09-06 17:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72ea071449fe352e12c558e7ffe9e238 SHA-1: 1387cd1170bb9521161e1708d9855156569f26f7 SHA-256: a14843eb23b6c643bb20f75e0f6674574cf4b016f5d49630ece013e20b34c54f
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, disguised as a report download. The PDF also contains a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. The presence of a download button lure further supports the malicious intent.

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=aircraft+accident+analysis+final+reports+pdf
    • https://static.usrfiles.com/ugd/d63aaf_039bf02e58ec44e084bdc8683ed34490.pdf
    • https://static.usrfiles.com/ugd/41a0b6_3f5f0105b2394dedb15d90269dce5fbe.pdf
    • https://static.usrfiles.com/ugd/0d089b_636ea5a0274342008f3ee941ddbb151d.pdf
    • https://static.usrfiles.com/ugd/b8c837_91e22bda275a4488aca5667fd10a698b.pdf
    • https://static.usrfiles.com/ugd/a43ec6_8a5c9dc6ba084a35bf10a3a049343f40.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/minority_report_full_hd_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/5094/3142/files/86828881760.pdf
    • https://cdn.shopify.com/s/files/1/0433/5380/0859/files/cheppave_chirugali_movie_songs_naa_songs._com.pdf
    • https://cdn.shopify.com/s/files/1/0429/3846/6471/files/anomaly_detection_with_robust_deep_autoencoders.pdf
    • https://cdn.shopify.com/s/files/1/0436/4143/8366/files/luvamemowev.pdf
    • https://cdn.shopify.com/s/files/1/0430/1724/0733/files/89777690181.pdf
    • https://cdn.shopify.com/s/files/1/0436/9989/6475/files/dd_wrt_dnsmasq.pdf
    • https://cdn.shopify.com/s/files/1/0436/3055/9390/files/tureturuwenuvu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/vorumokezil.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_off00005e99.bin
771a66de2263d609761e7dcff81f25bb436decbb638d6aa0323cae6343e9460e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E99 5240 bytes
font_01_sfnt_off0000708b.bin
ed214d1331229437e2fd1d19a7d26dccffc548b8ff60a67a50e9295ed1544a47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x708B 10192 bytes

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