Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f01c1024bcab47…

MALICIOUS

PDF

36.3 KB Created: 2020-08-31 11:05:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33de5c6b3cf4f0d91cf2cca744f21a90 SHA-1: ad9441ffc51df8cbe1397e9a8d8f8edff1351a97 SHA-256: 89f01c1024bcab47f2f8ee5124d8104de7b402712dc5013d02530395c6351ee1
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure for free templates, which is a common tactic for phishing or malware delivery. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to obscure the malicious destination.

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.
  • 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.com/wix?keyword=free+immunology+powerpoint+templates
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdf
    • https://cdn.shopify.com/s/files/1/0438/1658/3325/files/50110203754.pdf
    • https://cdn.shopify.com/s/files/1/0440/6660/3158/files/12421569762.pdf
    • https://cdn.shopify.com/s/files/1/0437/9734/8514/files/63579130900.pdf
    • https://cdn.shopify.com/s/files/1/0435/5316/1367/files/hpg_annual_report_2017.pdf
    • https://static.usrfiles.com/ugd/48d9a1_7796e53549c94e849c954b4add847a7c.pdf
    • https://static.usrfiles.com/ugd/f65175_9888db5c367446619513e44d7a759b47.pdf
    • https://static.usrfiles.com/ugd/c3f59f_0c03f72c3f434b17a2b8844b09eec686.pdf
    • https://static.usrfiles.com/ugd/5b604d_a0dbd2acfd254becbb9d9376d528bfc9.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d10fabd072346dda4cf7dba52b25347.pdf
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/47226117694.pdf
    • https://cdn.shopify.com/s/files/1/0434/2494/0184/files/51170176964.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/behavior_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/varobalafa.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_off0000446b.bin
3cee914904938f4016f008d2dca104c1791517d4fd54acb2f76b94b1cb424773
pdf-font-stream PDF embedded font (sfnt) at offset 0x446B 5172 bytes
font_01_sfnt_off00005600.bin
ebed2593c8facbce3f79dea8c0e633a58c964ab5f0628891b9b35ebeaa1f60fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x5600 9400 bytes
font_02_sfnt_off00007613.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x7613 4324 bytes