Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d7319b8cfe59b4a…

MALICIOUS

PDF

42.3 KB Created: 2020-08-04 15:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98f9b0bf5c3146f585cfe1b643e8ce48 SHA-1: 8b77e00738024a8cd530fd08ebf5386a155027de SHA-256: 9d7319b8cfe59b4a38fa16c2017824c30432369d86dfacfa03222e8ceb235b43
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.ru'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, many of which are hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The embedded URL 'https://ttraff.ru/pify?keyword=antisepsis+and+asepsis+pdf' is the primary IOC, suggesting a lure to a malicious site, likely for SEO spam or phishing purposes.

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.ru/pify?keyword=antisepsis+and+asepsis+pdf
    • http://tokome.villanovancaastudentchallenge.com/uploads/1/3/1/4/131452903/1232183.pdf
    • http://files.daintydande.com/uploads/1/3/2/8/132815748/xefajuxomi-podizuwurez.pdf
    • http://files.800steps.com/uploads/1/3/1/4/131484395/nevorino-wusefuzi.pdf
    • http://files.kyaramichellephotography.com/uploads/1/3/1/4/131438111/3015867.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/43259521349.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/vaxisumekiri.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/46597289614.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21096031872.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21884581804.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/27445854643.pdf
    • https://cdn.shopify.com/s/files/1/0434/7455/0950/files/6187810280.pdf
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/54024531686.pdf
    • https://cdn.shopify.com/s/files/1/0430/3909/6986/files/tumofivunegugeweme.pdf
    • https://cdn.shopify.com/s/files/1/0431/2095/1445/files/nogozup.pdf
    • https://cdn.shopify.com/s/files/1/0436/0926/0190/files/38525089611.pdf
    • https://cdn.shopify.com/s/files/1/0444/3032/7975/files/catalogo_de_tintas_suvinil.pdf
    • https://cdn.shopify.com/s/files/1/0434/2887/2359/files/89146443185.pdf
    • https://cdn.shopify.com/s/files/1/0429/0389/6230/files/64134029667.pdf
    • https://cdn.shopify.com/s/files/1/0433/2738/9851/files/34784537372.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_off0000688c.bin
f81848713618ea2094ade08eba92ab2c4380163a0f4858dfd816390e3244f94d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x688C 4896 bytes
font_01_sfnt_off0000794d.bin
97d4d30d6caa75f7d4a9b4c04e2177b5434c51768d1d7f54051a1adc423944de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x794D 10240 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.