Malicious PDF — malware analysis report

Static analysis result for SHA-256 99de06361fb1fe92…

MALICIOUS

PDF

45.1 KB Created: 2020-08-31 02:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 514bd3d3dbb39b67d5d452ea054ce9e5 SHA-1: 5231ca97e4a9df0330743a87457d433bce0554fb SHA-256: 99de06361fb1fe922d119b57259a928343ff6fc71422e6d4e0703e44c432e720
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=xmodgames+android+no+root'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links pointing to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute content. The presence of a visual download button further supports a lure-based attack. No scripts were extracted, but the primary malicious intent appears to be redirecting users to potentially harmful content.

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.ru/wix?keyword=xmodgames+android+no+root
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/gisulav.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1256/files/98856926899.pdf
    • https://cdn.shopify.com/s/files/1/0435/2281/8212/files/69179448042.pdf
    • https://cdn.shopify.com/s/files/1/0430/7704/2337/files/logiromoximutipoxusise.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/73720414487.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/91756007916.pdf
    • https://cdn.shopify.com/s/files/1/0435/5886/2997/files/jiretekitip.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/70242422332.pdf
    • https://cdn.shopify.com/s/files/1/0429/3017/6159/files/advanced_excel_tutorial_point.pdf
    • https://cdn.shopify.com/s/files/1/0431/9631/7845/files/alconox_msds.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/aptis_b2_test_sample.pdf
    • https://cdn.shopify.com/s/files/1/0437/6756/2394/files/gakudovobafujogu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1008/0420/files/kinematics_in_two_dimensions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/ruxipiz.pdf
    • https://static.usrfiles.com/ugd/21e6f2_59c73c99674f442e9f3f3dc4485563cc.pdf
    • https://static.usrfiles.com/ugd/7ff653_80ea4b97d02d4c73924075e906275bfb.pdf
    • https://static.usrfiles.com/ugd/47b1e8_bb07402d648d41668e73c778aab9b38f.pdf
    • https://static.usrfiles.com/ugd/97aff7_ae250171889040e89647c9ecf285d931.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_off00006981.bin
1860f683a5911ea3b159f220e28812552a8171243dca175576e0c5837ed63f22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6981 5092 bytes
font_01_sfnt_off00007aac.bin
fa98316bad0ee393e4244be63b1d230beb4724cf855be96ad4f2c87a5b302ae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAC 2140 bytes
font_02_sfnt_off00008486.bin
7c575776b13257fe7da1ca96a379be654cd8a5ffdf1f234595a79e98faaa9f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8486 10112 bytes

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