Malicious PDF — malware analysis report

Static analysis result for SHA-256 3469cb1b1d5c9adb…

MALICIOUS

PDF

51.2 KB Created: 2020-08-20 21:32:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c33c72d450e6f05d58d359e3a34e9d18 SHA-1: f100e0bae0f95f4c8365e1ce08d8992a02c2710c SHA-256: 3469cb1b1d5c9adbed7970f50a6a65ed9a08012ed22a6dcc5d0bc5906e4a2e69
150 Risk Score

Malware Insights

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

This PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=ceqa+guidelines+15064.+3+subdivision%2528+b%2529. The document body is heavily obfuscated, but the presence of numerous links, many hosted on Shopify, suggests an attempt to manipulate search engine results or obscure the true destination of malicious content.

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=ceqa+guidelines+15064.+3+subdivision%2528+b%2529
    • http://files.greengateolivegrove.com/uploads/1/3/0/7/130775949/8370207.pdf
    • http://files.carrielwells.com/uploads/1/3/2/6/132682899/1762636.pdf
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/32790052687.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/22914108245.pdf
    • https://cdn.shopify.com/s/files/1/0438/6763/5867/files/ganaxevedazi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0340/3678/files/96982323920.pdf
    • https://cdn.shopify.com/s/files/1/0439/3598/9915/files/27546400238.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/37257862451.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/sotilodamakawedenapexe.pdf
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/python_alphabetize_list.pdf
    • https://cdn.shopify.com/s/files/1/0439/4336/2715/files/24246714607.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9361/files/pisebadokipibobabof.pdf
    • https://cdn.shopify.com/s/files/1/0438/9126/1595/files/41666748429.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nadogenomaxijedunebenez.pdf
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/34737996745.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/13410175547.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_off0000789a.bin
33600b2aa5c521169659ab243aaff53388809911b0c3c6d89bff21b83913b676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x789A 6040 bytes
font_01_sfnt_off00008d49.bin
a0ec4fc8bb3457c240c01a0b7cc38fcd098433ee55b3fa98644b3f7fd034d488		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D49 15348 bytes

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