Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdbc8efe4406f72f…

MALICIOUS

PDF

50.6 KB Created: 2020-08-02 08:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f38aa604719084b84549fda3043ccc67 SHA-1: c1515a46587a81b7ec074c7b1b83f8f3b4dbd3a7 SHA-256: bdbc8efe4406f72fc7ce59ec8e410e16dc72f297fee9c758103211b61b6f4175
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). The document body, though heavily obfuscated, contains text and URLs that suggest a social engineering lure to install a browser extension or plugin. This is supported by the 'SE_BROWSER_INSTALL_LURE' heuristic. The presence of numerous links and the redirector indicate an attempt to lead the user to malicious content or downloads.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=teen+beach+movie+surf+crazy
    • http://files.leguesepticservices.com/uploads/1/3/1/6/131606789/651974.pdf
    • http://files.cumcvb.org/uploads/1/3/1/3/131382217/vakalawalirijusawek.pdf
    • http://files.birth-roots.co.uk/uploads/1/3/2/6/132695302/55858.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/mhgu_valor_style.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/pubizuxetufalizumoboxuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/4538/8437/files/sokedog.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/6856345413.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8672/files/jonusoxumudulelisawifodot.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/30015483655.pdf
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/domejadokokenafovilafesov.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/97833759919.pdf
    • https://cdn.shopify.com/s/files/1/0434/7048/7702/files/vixukofejisoxuxelawomel.pdf
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/witevixebageruxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/pavuraxotewup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.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_off00007cdb.bin
fc1ac96a37cc6ba74df2b87e7f093b4bf0a207434ed928051b9626483e971848
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDB 5388 bytes
font_01_sfnt_off00008f17.bin
b17348ece6aa60df00af97f97baee94f2702af36bb4d2a3106f5145675cf4dfd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F17 13744 bytes