Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe3d2a7c762332d…

MALICIOUS

PDF

40.4 KB Created: 2020-08-15 08:23:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c352e3440883efb56d661ddd67fe34d6 SHA-1: 2506aa8e8572d9388fde5cd76067f51c3f119f31 SHA-256: ffe3d2a7c762332d06c2d146e03b6d10180544932e25608e79a082d29752e7f8
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. The document body, though heavily obfuscated, contains the same URL and text related to CCTV camera apps, suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=cctv+camera+pros+mobile+app+for+android
    • http://files.meganelysefulmer.com/uploads/1/3/0/9/130969989/1429833.pdf
    • http://lukakef.redriverzoostore.org/uploads/1/3/0/7/130775200/kigum-semirisuxoligox.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/jelexozuwubiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/mezafufujevobej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pitoparejiki.pdf
    • https://cdn.shopify.com/s/files/1/0432/7427/2924/files/apprendre_l_anglais.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/83809788288.pdf
    • https://cdn.shopify.com/s/files/1/0446/2444/5603/files/abu_dhabi_map_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9199/2480/files/gimojatipa.pdf
    • https://cdn.shopify.com/s/files/1/0436/3013/3406/files/68132924885.pdf
    • https://cdn.shopify.com/s/files/1/0435/7901/5327/files/51034003191.pdf
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/31804646794.pdf
    • https://cdn.shopify.com/s/files/1/0433/5101/5577/files/todixeguwopitigaxuwopu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2287/4781/files/cetonas_y_aldehidos.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/21190256529.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_off00005fd4.bin
1970943fe810974fefbbc1f552a2da9a7e9df0e4e875114b19e28369a499ba72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD4 5408 bytes
font_01_sfnt_off00007212.bin
19635508e6f73595241da1dca0fba0ba16f6fa0b40ee720a063f0d72db55d683		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7212 10196 bytes

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