Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b9237225aadfe3…

MALICIOUS

PDF

42.7 KB Created: 2020-08-25 16:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce4e301ba02a5eb1041ce6b001b0c834 SHA-1: 6725d09960d50a1e3974638627f244ea4716572b SHA-256: 85b9237225aadfe3bfb3ae729f1f6bb73a86bdac016f4b04ea4f4dcead692450
168 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'Cyber crime report in nepal' and a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or redirection strategy. The presence of a 'password-protected archive' lure indicates an attempt to bypass security controls by encrypting the actual payload. The document's primary function appears to be directing the user to a malicious URL that likely serves a second-stage payload.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cyber+crime+report+in+nepal
    • http://files.justaskmigration.com/uploads/1/3/1/6/131606125/lakejejenevexe.pdf
    • http://suzizebuk.lemieuxchihuahuas.com/uploads/1/3/2/6/132695540/30a109e0b8ec3.pdf
    • http://files.increaseministries.com/uploads/1/3/0/7/130776485/3556119.pdf
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/waximezuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/happy_birthday_flower_images_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/relilasokivamizorosub.pdf
    • https://cdn.shopify.com/s/files/1/0440/2026/9221/files/agnostico_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0439/4388/7016/files/lithium_ion_battery_construction_and_working.pdf
    • https://cdn.shopify.com/s/files/1/0431/4798/5053/files/riladi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3336/files/notifezusowotinogimamevus.pdf
    • https://cdn.shopify.com/s/files/1/0430/8008/9760/files/93742840789.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/honda_pilot_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3571/files/petiwomujipifafirusuzodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.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_off00006908.bin
9cfd0790cc973bf77985c68f3a66c53bd30aa09135325357e702ae6ae9385a61
pdf-font-stream PDF embedded font (sfnt) at offset 0x6908 5048 bytes
font_01_sfnt_off00007a16.bin
f0409f0db94d4b70d0673478ac4d0875942ac53005d6c8d7401ea839de35f40a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A16 10620 bytes