Malicious PDF — malware analysis report

Static analysis result for SHA-256 b20360a8321613d5…

MALICIOUS

PDF

34.1 KB Created: 2020-08-21 13:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00c43a961fcf594bdacd748c47741089 SHA-1: eb1a8e1758536641e6ddec1afc9304b7a617d798 SHA-256: b20360a8321613d50c9d9b46f30673b4854f03b8ccf6b3934d7c58e3453a7fcd
150 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=darkness+rises+beginner+guide'. Additionally, the document exhibits characteristics of a PDF link farm, embedding numerous external links, several of which are hosted on potentially malicious domains. The document body, though heavily obfuscated, contains the primary malicious URL and several other PDF links, suggesting a lure to external 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=darkness+rises+beginner+guide
    • http://pipef.martabrysha.com/uploads/1/3/2/7/132741555/c960bce2ed.pdf
    • http://files.frciola.com/uploads/1/3/1/3/131380305/nusixobikekudox-vonitepu-redepu-buteko.pdf
    • http://tiridub.eugenechislenko.com/uploads/1/3/0/7/130775505/nodiloti-raxoro-jebuvevonemutip-libegemugi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7869/4565/files/android_manager_with_proxy_settings.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4712/files/b._com_syllabus_1st_year_2020_18.pdf
    • https://cdn.shopify.com/s/files/1/0431/7213/5074/files/depelubizutelepujoriduda.pdf
    • https://cdn.shopify.com/s/files/1/0439/9477/5710/files/32793097756.pdf
    • https://cdn.shopify.com/s/files/1/0439/3366/3400/files/hewlett_packardhp_laserjet_p1505_driver.pdf
    • https://cdn.shopify.com/s/files/1/0428/6640/9639/files/kujisejonemeditofepiref.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/zinev.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7394/files/ziruru.pdf
    • https://cdn.shopify.com/s/files/1/0429/3384/6175/files/woxukupuweb.pdf
    • https://cdn.shopify.com/s/files/1/0430/8955/9705/files/wic_reset_keygen.pdf
    • https://cdn.shopify.com/s/files/1/0440/8338/0376/files/arithmetic_sequence_word_problem_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0278/1083/files/dinotevebegugitiwukatu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/93412877387.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7205/files/43702214843.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_off00004960.bin
c46d416a01be6b6abf310e3155d9b4455aee0eabf35a8757a992cb79c9715286
pdf-font-stream PDF embedded font (sfnt) at offset 0x4960 5164 bytes
font_01_sfnt_off00005af8.bin
106b641fc43e8856e5e8f86f9eb4e37cccf298de58f5bc816f56ada5d3e8f4c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF8 9564 bytes