Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd6d7d3c040e99d1…

MALICIOUS

PDF

41.9 KB Created: 2020-08-30 04:47:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fb3b49259a92e9774c6097c8e2e147c SHA-1: 6c478f18b9d3700b73265a3fc5a844c3a4c24be2 SHA-256: cd6d7d3c040e99d1767a29cf65fe3546cc649090b8817dd01df7770f3c6b9fb2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though heavily obfuscated, contains keywords related to a product sale and the malicious URL, suggesting a lure for a phishing or scam campaign. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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/wix?keyword=craftsman+pgt+9500+for+sale
    • https://cdn.shopify.com/s/files/1/0428/1758/5308/files/57621347026.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/84796862409.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/english_speaking_course.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dfcf5f11552475db2c40cf7f05396e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5c3234a0c6d4ca9ad8487bff3f9df42.pdf
    • https://static.usrfiles.com/ugd/80c1db_5ff0fc045f254e2eb7b64b511e11bcc6.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ee3cab2b60c4fbe80193b388bc05fd8.pdf
    • https://cdn.shopify.com/s/files/1/0440/1309/3029/files/19291321116.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/zedubipo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4419/8805/files/pumoxanukunimoguz.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/zidalefelodisekozutofo.pdf
    • https://static.usrfiles.com/ugd/b8c837_03e43f3c253b4dedb96b00dbd9981e3e.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_63e013fcc8fd4e3689f81ae781698017.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_1ebe27b2b8e94419a57883ffe8c403ff.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_off000061a7.bin
423aa84a80d511f91959046606a711838c5a3d91bd92d7db5e591b6fbb553191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A7 5548 bytes
font_01_sfnt_off00007468.bin
24153fec02d34bcaccd7e76e9b6ecc019133288225da04cc5e743e88e15fc00a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7468 10968 bytes

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