Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd1537271ab194c…

MALICIOUS

PDF

44.4 KB Created: 2020-08-11 05:12:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01ce297997852b497429086f5e8dbb12 SHA-1: f027bd81c06a1388c8286529c59f04b73bc86d92 SHA-256: 9cd1537271ab194ca27b97cbdd4d3e238bb1530412aa23d140ec209d5155329c
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL identified as https://ttraff.cc/pify?keyword=frise+chronologique+mouvements+litt%25C3%25A9raires+pdf. This indicates the document's purpose is to redirect users to malicious infrastructure. The ML classifier strongly supports this assessment.

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=frise+chronologique+mouvements+litt%25C3%25A9raires+pdf
    • http://files.katongfamilyclinic.com/uploads/1/3/1/4/131407552/fapetu.pdf
    • http://files.wooshproductions.com/uploads/1/3/0/8/130874358/wubod_tanazudit.pdf
    • http://files.thediazobserver.com/uploads/1/3/2/7/132740836/nefulet_lagakixufi.pdf
    • http://files.dnatlfood.com/uploads/1/3/1/3/131398036/f39f1558883.pdf
    • http://files.jeanbarrettpetphotography.com/uploads/1/3/1/3/131379680/f8fc57f83f.pdf
    • https://cdn.shopify.com/s/files/1/0436/9829/0856/files/38605806024.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/neevia_merge.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/12333214226.pdf
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/90857949698.pdf
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/organelos_celulares_estructura_y_funcion.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3899/files/73955448585.pdf
    • https://cdn.shopify.com/s/files/1/0437/1188/9573/files/chemistry_textbook_class_11_gujarat_board.pdf
    • https://cdn.shopify.com/s/files/1/0432/7152/0414/files/uninstall_mysql_from_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/6731/8167/files/poulan_wild_thing_carburetor.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/57579522660.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/1784249686.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lafiku.pdf
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/sedesudanelewatugo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4334/8892/files/gupipelagasenufubutif.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_off0000687b.bin
7360471a8b58a722bb4f3e4e55e1d04bb0add9d879f6efbff49de38e4157f391
pdf-font-stream PDF embedded font (sfnt) at offset 0x687B 5852 bytes
font_01_sfnt_off00007bf5.bin
8019ce67fc786807cf7d8ce87ee7f1dbf5ab8d7bd0c0e78129e4b150e73c3c1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF5 11892 bytes