Malicious PDF — malware analysis report

Static analysis result for SHA-256 bff3818d9edb0d81…

MALICIOUS

PDF

32.7 KB Created: 2020-08-16 17:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66fc0f686a7bc834213b4c3348e26a74 SHA-1: efb785633f122ec9bd680050fdc9ccf8f64288b1 SHA-256: bff3818d9edb0d818ef07f3373a42075a416d5586c87333840080233c5f27da1
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=iceman+the+time+traveller'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains references to these URLs, suggesting a coordinated effort to direct users to potentially malicious content. No scripts were extracted from this sample.

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=iceman+the+time+traveller
    • http://files.lexingtonal-anon.org/uploads/1/3/0/8/130874398/lutor_kapetekugow.pdf
    • http://jiripo.craigupright.net/uploads/1/3/1/4/131408027/fiziroxokode-dulizeza.pdf
    • http://topusebot.leelakelleybodywork.com/uploads/1/3/2/6/132681670/mufosinof.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/zatuxaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6701/5335/files/90720302851.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/wifafipakokovavir.pdf
    • https://cdn.shopify.com/s/files/1/0429/2483/4982/files/52402511769.pdf
    • https://cdn.shopify.com/s/files/1/0437/3574/4673/files/honeywell_pro_3000_installation_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/katakoxomitelu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4744/4903/files/tazujufof.pdf
    • https://cdn.shopify.com/s/files/1/0438/6455/5680/files/81656955485.pdf
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/bidejuvebuluwil.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/5447824591.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_off0000444c.bin
02d7cf9c622385e0c162f32ca615a184448d004888f01fcde20fe0cc21911b95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x444C 4856 bytes
font_01_sfnt_off00005497.bin
a69105e5a1366e6af1cab283a7c00a6e362574e756d97d2db6a4626126640c06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5497 9924 bytes

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