Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ae5bcdb604ed95…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 22:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84ba04ff5fa96f0fef1ebad2c5f3ac09 SHA-1: 74624d6622557216b53358a4ca9b856597752682 SHA-256: e4ae5bcdb604ed95a4b14f8b38053a699950dbae53636d5023d316e59a6cf7cd
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com). The document body, though partially corrupted, includes the same URL as the primary malicious link, suggesting a lure to a phishing or malware distribution site. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating a coordinated effort to drive traffic to potentially harmful destinations.

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.com/pify?keyword=sch%25C3%25A9ma+appareil+g%25C3%25A9nital+f%25C3%25A9minin+pdf
    • http://files.covingtonnazarene.com/uploads/1/3/1/3/131398097/lajelili_kofateboxasub_xunovu_kubovipig.pdf
    • http://files.midwestfirehydrant.com/uploads/1/3/2/7/132740291/fowigo_ribasusugina.pdf
    • http://vuzipa.onlytheessentialsshop.com/uploads/1/3/2/3/132303195/vopuravoz_dazenimeji.pdf
    • http://zagifefi.dhaynesart.com/uploads/1/3/1/4/131438641/1dd72ca0.pdf
    • https://cdn.shopify.com/s/files/1/0430/5711/9386/files/46697376796.pdf
    • https://cdn.shopify.com/s/files/1/0445/6543/0431/files/4th_industrial_revolution_in_construction.pdf
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/18974990516.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/marabetuwasefu.pdf
    • https://cdn.shopify.com/s/files/1/0440/9848/6424/files/gijufixemumozarovibamapel.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/463754761.pdf
    • https://cdn.shopify.com/s/files/1/0441/1126/5944/files/4046502918.pdf
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/pelovako.pdf
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/91936231555.pdf
    • https://cdn.shopify.com/s/files/1/0436/7617/2441/files/materialismo_dialectico_libro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/60781539137.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/28489743504.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/noise_risk_assessment_report.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_off00006d06.bin
680f0c97619f5ca10dc66fe58d0eed5f694232464cf88889ffef942e08a4af40
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D06 5636 bytes
font_01_sfnt_off00007fbc.bin
a560bc1587884fbe718cf0c109e812954316d67815b45f1f6758cb51181ec948
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBC 12376 bytes