Malicious PDF — malware analysis report

Static analysis result for SHA-256 404c9e7abf3de080…

MALICIOUS

PDF

46.6 KB Created: 2020-08-09 03:27:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 500d6661f78d95fd9e8c368dfd64034d SHA-1: 7d1e042e4a8e7d586535ba9a55507f783c957cfb SHA-256: 404c9e7abf3de080b1f30e827657f79dae013bf7eebce5d5f32be6f2879398a8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=case+in+point+pdf+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0429/2476/9436/files/ragibutavufud.pdf'. The document body, though heavily obfuscated, contains references to these URLs, suggesting a lure to download a file or visit a malicious site.

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/pify?keyword=case+in+point+pdf+free
    • http://files.flyfishguanaja.com/uploads/1/3/2/6/132695575/kirupegakabuwo_gevubufodofezes.pdf
    • http://files.martialhartamas.com/uploads/1/3/0/8/130814279/6186ec0be38b.pdf
    • http://files.gabarsolo.org/uploads/1/3/1/0/131070799/3344575.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/ragibutavufud.pdf
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/80729186708.pdf
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/dibels_progress_monitoring.pdf
    • https://cdn.shopify.com/s/files/1/0431/0981/0327/files/7135079543.pdf
    • https://cdn.shopify.com/s/files/1/0429/5986/3959/files/cadena_de_suministro_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/44578511866.pdf
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/22940764295.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/vobagiwan.pdf
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/15023897168.pdf
    • https://cdn.shopify.com/s/files/1/0430/5672/6165/files/duguvitelewopuxovu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/25264180521.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_off000079a1.bin
1ae797236f444ad68c716c935de698fbbd3f234226533f041d3d0f650877fe17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A1 4908 bytes
font_01_sfnt_off00008a5e.bin
177643f9449a879b0e145691cb35b5a2bb0008eb15be9b55b823881bb843218d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5E 10272 bytes

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