Malicious PDF — malware analysis report

Static analysis result for SHA-256 c947f012bf22cbff…

MALICIOUS

PDF

54.9 KB Created: 2020-08-29 06:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ea1cee6c3460d25d159b334c415f903 SHA-1: 6db2385cd3b45c57d88c144148dbe1c1387de817 SHA-256: c947f012bf22cbff3a2efaae6bd4d95f5742c06570de5b3db915a2f54e132afb
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged for containing a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=character+analysis+pdf'. Additionally, it features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and contains the malicious URL, reinforcing the intent to lure users to a harmful site.

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.cc/wix?keyword=character+analysis+pdf
    • https://cdn.shopify.com/s/files/1/0428/2309/0343/files/97585445445.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botezosural.pdf
    • https://cdn.shopify.com/s/files/1/0431/6934/9794/files/dukiwuj.pdf
    • https://cdn.shopify.com/s/files/1/0439/3864/4123/files/fepexujuda.pdf
    • https://cdn.shopify.com/s/files/1/0437/7421/4306/files/84764095321.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/97818961435.pdf
    • https://cdn.shopify.com/s/files/1/0430/9096/8729/files/abbi_glines_rosemary_beach.pdf
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/mumofuwinok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/budexojimomamuzarumedi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/flip_text_upside_down.pdf
    • https://cdn.shopify.com/s/files/1/0438/8998/3640/files/m3u8_url_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/3460/5725/files/vagedebifa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8258/7037/files/aptransco_results_2020.pdf
    • https://cdn.shopify.com/s/files/1/0461/9485/1993/files/fojezawod.pdf
    • https://cdn.shopify.com/s/files/1/0433/6739/9575/files/kahve_makinesi_delonghi_kire_zc.pdf
    • https://cdn.shopify.com/s/files/1/0440/7102/6853/files/politik_islam_di_malaysia.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/kovonutibo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8554/files/57996931832.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_off00009989.bin
36240626de8b537dce66f1dbe8013e721588efdff8b6ab0d6a2eb306faf71b1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9989 5248 bytes
font_01_sfnt_off0000ab66.bin
57581bd190a31a27e334dbaef5be3c28e4b808c5f8f29881aad2fae200cf7e29
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB66 10188 bytes