Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d3606642e72119…

MALICIOUS

PDF

46.8 KB Created: 2020-08-02 21:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0452c20a92f9b8b7a5380c7d38f82de7 SHA-1: 0923395f8efcb6935322eac605e45a6580dcb8a7 SHA-256: d7d3606642e72119c93c71c58c37e3e0d74b15843844e62ec9421f27e0e47cdc
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One prominent URL, 'https://ttraff.ru/pify?keyword=evenflo+platinum+series', is flagged as a malicious redirector. The ML classifier also strongly indicates maliciousness. The document body contains garbled text but includes the redirector URL and a benign-looking Shopify URL, suggesting a lure to a malicious 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.ru/pify?keyword=evenflo+platinum+series
    • http://files.acupunctureforpain.co/uploads/1/3/0/7/130775249/kagiz_dofuforebubekaf.pdf
    • http://files.icarusrx.com/uploads/1/3/1/1/131164308/dazomovapolupozij.pdf
    • http://files.brightonebikes.co.uk/uploads/1/3/1/3/131398424/megov.pdf
    • http://files.amargeauxrai.com/uploads/1/3/0/8/130813325/83881a8c37e658.pdf
    • http://files.mounthelenacounseling.com/uploads/1/3/1/4/131483219/f3badb79261.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/kewelomuperisofaveboga.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/51449974418.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/58567910562.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/42358233839.pdf
    • https://cdn.shopify.com/s/files/1/0440/4989/1478/files/60233437543.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4266/files/3579502643.pdf
    • https://cdn.shopify.com/s/files/1/0431/9127/1586/files/munujulatulujipevuvok.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/xeragazozodesigu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/kezogawifun.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/fofefupewafeguxopupep.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/devaleparisekobelete.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_off00006869.bin
ffeb89eaad713c9717385028f79c9757067aafb2c2382ea8cbab0e6efe35a425
pdf-font-stream PDF embedded font (sfnt) at offset 0x6869 6744 bytes
font_01_sfnt_off00007951.bin
f2d88f3a07a567ff2a0b18052de01599a8d6e8ac5317cfef0bb5460919bfc811
pdf-font-stream PDF embedded font (sfnt) at offset 0x7951 5064 bytes
font_02_sfnt_off00008a83.bin
4a2137b126242df2dccc61c63421e0d9237520ec584bcf93745e93f42bd80100
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A83 10384 bytes