Malicious PDF — malware analysis report

Static analysis result for SHA-256 94cc7a937c44cbcb…

MALICIOUS

PDF

41.9 KB Created: 2020-08-22 02:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b5b7086847839956a0f8ef01334ea46 SHA-1: 4e91f2dddf07552af170b1b234d7e7c1233893ab SHA-256: 94cc7a937c44cbcb3572357278eda0f316aeb74c5be78be33ce823cef1d9f847
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=setmindate+datepicker+android+not+working`. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of many Shopify-hosted PDF links indicates a potential SEO poisoning or link farm tactic to obscure the malicious redirector.

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.ru/pify?keyword=setmindate+datepicker+android+not+working
    • http://lazer.esteemedk9.com/uploads/1/3/0/7/130775940/zukipepiwawapu-togax-lolifigulisoto-nesemibutadig.pdf
    • http://files.jcrvtx.com/uploads/1/3/0/8/130874240/lamonudi.pdf
    • http://files.annarescuesquad.com/uploads/1/3/1/4/131438353/244e2753407d.pdf
    • http://jadavuwo.lewissportsacademy.com/uploads/1/3/0/9/130969352/tivijevijev_kerurexizi_jubipi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2507/2282/files/50060111843.pdf
    • https://cdn.shopify.com/s/files/1/0432/5969/1163/files/wujixozobojejo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9426/8320/files/blank_space_piano_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/bosque_de_coniferas_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojedisubeweful.pdf
    • https://cdn.shopify.com/s/files/1/0430/8071/2343/files/89286157444.pdf
    • https://cdn.shopify.com/s/files/1/0439/4093/7896/files/facebook_videos_1080p.pdf
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/xefipinere.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9277/files/84822599465.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3089/files/28996249534.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_off0000660e.bin
a7c0698f65c1e9ad90f5dfdaa63e9a2d91a06788c9eb45a9d89b403e52a086a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660E 5440 bytes
font_01_sfnt_off0000788c.bin
fb29ac9e9bdcc37a40ea39edc286619e13d2a0d7662b462b0a3ad1b7d49c4a40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x788C 9980 bytes

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