Malicious PDF — malware analysis report

Static analysis result for SHA-256 85968fda91ee1add…

MALICIOUS

PDF

58.0 KB Created: 2020-08-25 03:42:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 550cd637b3c8e52136814e58c2f2534a SHA-1: 30ddbadd625d2dad213f48b747db93a3d00ac02a SHA-256: 85968fda91ee1addfc5467e83933ef77699c332fd4a6e3b76e40e6e04e7ecf4e
128 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=amma+songs+telugu++naa'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are hosted on shopify.com. The presence of a 'download button' heuristic further suggests a lure to entice users to click these links. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing 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.com/pify?keyword=amma+songs+telugu++naa
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.pdf
    • http://files.nouveaumedic.org/uploads/1/3/2/3/132302888/ec5a0c5e7ccc3.pdf
    • http://files.alignwellnesscare.com/uploads/1/3/1/3/131380345/lawazep_beriguri_goxiwasubifar_wevatixugifejog.pdf
    • http://files.raysoflightboudoir.com/uploads/1/3/0/7/130776291/7569016.pdf
    • http://biwoxariv.mhes-ses-bandstrings.com/uploads/1/3/0/7/130776132/83f9b973bfd75e6.pdf
    • https://cdn.shopify.com/s/files/1/0440/9799/4904/files/agneepath_full_movie_720p_filmywap.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/online_to_word_converter_with_editing_options.pdf
    • https://cdn.shopify.com/s/files/1/0428/5467/8687/files/52972944638.pdf
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/35445509645.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/1205535471.pdf
    • https://cdn.shopify.com/s/files/1/0428/3095/4655/files/ap_module_grade_8_4th_quarter.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/23342005412.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/sepitonebagitesakoxeluta.pdf
    • https://cdn.shopify.com/s/files/1/0431/4031/7335/files/fewoxorimefiwiverefizu.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006542.bin
f966fda2497ff5f8cd0c8cb3ce37ddcb27cdc205b45d4b0dae35a1f19471f158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6542 4896 bytes
font_01_sfnt_off000075d2.bin
4ec56d4827d96bca4fd94d0e1085136c90970774141b7a0bea8cb957f8815f8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D2 3000 bytes
font_02_sfnt_off00008262.bin
b5cdf1be6ef4cceadf1d782d3ed44fd114aa4316127b46f2f8c47409d58ec408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8262 4544 bytes
font_03_sfnt_off0000935e.bin
506df2e75e5aa2d8aced39d834dbfc4162729551b1d3c2cfb8b8bacc2b06f9d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x935E 14292 bytes
font_04_sfnt_off0000c0f4.bin
319ea9db7dfd65ffbde06851f42e4cdb14f4137581995c329a31a5f9f1ccc973		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F4 17456 bytes

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