Malicious PDF — malware analysis report

Static analysis result for SHA-256 df314d580a0a8f02…

MALICIOUS

PDF

53.3 KB Created: 2020-07-26 05:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab9765efd80848ea4fbe9b0744f095cb SHA-1: 47b1cd4dbbabdf52e4a4467577eb731026142bfe SHA-256: df314d580a0a8f0297eec326dadfe8db405f042b160531c16afc6af762cad91a
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to a 'Marshmello helmet template'. The presence of many external PDF links, some pointing to potentially compromised Shopify domains, further supports a link-farming or redirection strategy. No scripts were extracted, but the primary attack vector appears to be social engineering via malicious links within the PDF.

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=marshmello+helmet+template+pdf
    • http://files.peydenshelton.com/uploads/1/3/0/8/130814680/696d46.pdf
    • http://files.twindragonstaekwondo.com/uploads/1/3/1/4/131482874/puwuki.pdf
    • http://files.johnlknapp.com/uploads/1/3/2/6/132680986/bosalifanelita.pdf
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/valudagatinonijuvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/dugodo.pdf
    • https://cdn.shopify.com/s/files/1/0439/2275/1643/files/vetewuvinafumuvefugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/milova.pdf
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/lugumilirevisivovedan.pdf
    • https://cdn.shopify.com/s/files/1/0433/9479/3635/files/momumepopuwegaje.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/foxub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1805/files/52213335078.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/deliduzon.pdf
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/vumojagotomozivod.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/35879724347.pdf
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/52945803980.pdf
    • https://cdn.shopify.com/s/files/1/0430/6190/3517/files/kapor.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_off00007dea.bin
f46ea3d1699a472eab11977236e015d850ed150fced6c1a9322c8bc2b8ddbd0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEA 4920 bytes
font_01_sfnt_off00008ea8.bin
665ad5eeb6e256419c9c37bdf80bcbd1f8a040bce4bc0666b9655b9570ed3c75
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA8 10160 bytes
font_02_sfnt_off0000b1ab.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1AB 16312 bytes