Malicious PDF — malware analysis report

Static analysis result for SHA-256 1af9eb5678e0b206…

MALICIOUS

PDF

45.0 KB Created: 2020-08-30 11:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a55943df137d462a958c3d2fbc604bd0 SHA-1: 87555ff6d6dc716a90d2c0010ab0857ec9c8e642 SHA-256: 1af9eb5678e0b2061856d9c629aaeba8cf34f2d874a61a87feb59684b8e43e82
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with at least one pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.com/wix?keyword=dreamcast+emulator+psp', suggesting a lure to a malicious site. The presence of numerous external links, including to Shopify domains, indicates a potential SEO poisoning or link farm strategy to distribute malicious content.

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.com/wix?keyword=dreamcast+emulator+psp
    • https://cdn.shopify.com/s/files/1/0433/4125/0714/files/ymusic_latest_version_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/3038/7607/files/lojobivefe.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/ribamigurajopimumozumazab.pdf
    • https://cdn.shopify.com/s/files/1/0429/2473/6678/files/kindle_fire_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/43493916443.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/gmod_boat_addon.pdf
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/zizesugadafugawepamumas.pdf
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/clasificacin_taxonmica_de_los_seres_vivos.pdf
    • https://static.usrfiles.com/ugd/b8c837_51a779df1f9348c3967d9a86dfea61fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_d875d13cd1e6451d9ac5728e0dbfcc71.pdf
    • https://static.usrfiles.com/ugd/51c472_bc79bf5098d345109c0f21f80fca7899.pdf
    • https://static.usrfiles.com/ugd/79e5df_900bf8b57fb64c88992811ef38b3b5fa.pdf
    • https://cdn.shopify.com/s/files/1/0447/4689/9607/files/jst_connector_2_pin_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0465/0142/9406/files/bosque_tropical.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8284/files/renatobup.pdf
    • https://cdn.shopify.com/s/files/1/0433/6441/7694/files/funny_answers_for_compliments.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/6504731454.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_off00007077.bin
af25e7b3ce23a69cf6436de8a1808c9c70414f779fee85dba0c511d6348ed2cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7077 5076 bytes
font_01_sfnt_off000081a2.bin
d480ce99173374cd994b0d90f597c38d07c34dbd93b0ffa6b58e2abdcb3d5a9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x81A2 11360 bytes