Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fa95ce6b05c41a…

MALICIOUS

PDF

48.8 KB Created: 2020-07-16 21:24:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a60af5d7487ac9d5fafc2ad50191cdb SHA-1: a622495e16cf1d53406a570e825f97e602e462dd SHA-256: a4fa95ce6b05c41a79dd37607bb88afe24ea63af5144ec31381aa6bd7b71abb1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to redirector infrastructure. The primary link directs to 'ttraff.cc', a known malicious redirector. The document body is heavily obfuscated, but the presence of numerous external links suggests a link farm or SEO manipulation tactic to drive traffic to malicious sites. 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.cc/pify?keyword=types+of+qualitative+data+analysis+pdf
    • http://files.bzawec.com/uploads/1/3/2/3/132303378/potulejusirimi-wifonuri.pdf
    • http://files.brendagratton.com/uploads/1/3/0/7/130740148/4ad87e516273.pdf
    • http://files.berwynpresbyterian.net/uploads/1/3/1/8/131857602/75ff146a8a08.pdf
    • http://files.eckartfingberg.com/uploads/1/3/1/4/131407364/ketetoli-puruna-sefiju.pdf
    • http://files.lexasluxuriouslooks.com/uploads/1/3/0/8/130813827/menogik.pdf
    • http://files.flourandwaterbaking.com/uploads/1/3/0/8/130873951/a7f02e.pdf
    • http://files.shopbrickroad.com/uploads/1/3/1/4/131437625/9065848.pdf
    • http://files.brownscustomgrips.com/uploads/1/3/0/9/130968972/bajegebe_jaxisuli_polemufixetiben.pdf
    • http://files.brownscustomgrips.com/uploads/1/
    • https://xakisujufo.files.wordpress.com/2020/06/88935081298.pdf
    • https://mameloga.files.wordpress.com/2020/06/61832193524.pdf
    • https://kufadibemer.files.wordpress.com/2020/07/39549903499.pdf
    • https://wasigamolo.files.wordpress.com/2020/06/zebitanudaluwikezegesema.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rixaraxamixenapo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/52201985258.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zututekafufefosapebuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kamunikizesow.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/jerinelemebuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tagitigupi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/xedorujago.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44628440260.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_off000082b6.bin
0e3241409b220911d7fd532c5839815f7a6799ea63e3596860093607722c9402
pdf-font-stream PDF embedded font (sfnt) at offset 0x82B6 5060 bytes
font_01_sfnt_off0000940f.bin
bfa8f0c196589fe73360ad0016379857fe37ba1b5f78a153c54d690ec375092e
pdf-font-stream PDF embedded font (sfnt) at offset 0x940F 9852 bytes