Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba6362da1e2915e8…

MALICIOUS

PDF

44.6 KB Created: 2020-08-23 07:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5ad2a8b9125f4a5a4f4d53d9eb730ce SHA-1: 543c573af97d43cd459bb5b44da88fb53efe340e SHA-256: ba6362da1e2915e80d0eaf3ce05be3531b7d977e69143ee5b45d424b7f60df2d
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a free download for "queen platform bed storage plans". The link leads to ttraff.cc, which is known malicious infrastructure. The document also contains a large number of embedded links, many pointing to Shopify, likely as part of a link farm to improve SEO for malicious content. The ML classifier strongly flagged this PDF as malicious.

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/pify?keyword=free+queen+platform+bed+storage+plans
    • http://files.jonathan-schork-studios.com/uploads/1/3/1/4/131409761/ebd299876282e.pdf
    • https://cdn.shopify.com/s/files/1/0432/1650/2939/files/administrao_financeira_oramentria.pdf
    • https://cdn.shopify.com/s/files/1/0435/1816/5146/files/30442371834.pdf
    • https://cdn.shopify.com/s/files/1/0433/5229/3541/files/sixuzazezodikevuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977390730.pdf
    • https://cdn.shopify.com/s/files/1/0435/7845/8275/files/58943184001.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/absceso_periamigdalino_tratamiento_antibiotico.pdf
    • https://cdn.shopify.com/s/files/1/0432/4858/2820/files/financial_advisor_resume.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/97952638474.pdf
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/zomiweri.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/jobaxoxizukavuzuwel.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059a7.bin
98957925a3e2f25b08c6b23a363c58474b91e221719b0ba34713a57b018e3af8
pdf-font-stream PDF embedded font (sfnt) at offset 0x59A7 5580 bytes
font_01_sfnt_off00006c7f.bin
e639c8541eef2a2c42987b77fae4e408a0d8ac55a23e893f088c165ec78b36f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7F 10248 bytes
font_02_sfnt_off00008fd9.bin
f267a97a42ed964490c0c36cf8d24d30f5cfc386ee24850e75bb3a4991f11828
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD9 16376 bytes