Malicious PDF — malware analysis report

Static analysis result for SHA-256 39ee84d2cf82ed49…

MALICIOUS

PDF

55.9 KB Created: 2020-07-31 20:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a637e7fbb83b859a63f44ab1d3a596e SHA-1: 91016e31c8410ce467b79425371cef03cd2305fd SHA-256: 39ee84d2cf82ed4945f0adebf786b6267efe7c3bf0f3c9545a0d94475c79f675
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many pointing to Shopify, suggesting a link farm designed to attract traffic. The document body, though partially corrupted, contains the target URL, reinforcing the lure of downloading a manual.

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/pify?keyword=hamilton+beach+ice+cream+maker+manual
    • http://files.unveiled-ministries.org/uploads/1/3/1/4/131407102/7732875.pdf
    • http://files.smartweddingsandevents.com/uploads/1/3/1/4/131437666/3191024.pdf
    • http://files.friendsnorthcreekforest.com/uploads/1/3/2/6/132682235/bafukazam_mipupezibipag_diveza.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/54631608458.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/59740231208.pdf
    • https://cdn.shopify.com/s/files/1/0432/1637/1867/files/mifavebumoledisutomoxemi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/99248628268.pdf
    • https://cdn.shopify.com/s/files/1/0429/0369/9615/files/tepeziranikeropilalorid.pdf
    • https://cdn.shopify.com/s/files/1/0431/0083/1905/files/mezonuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/5101/5577/files/govim.pdf
    • https://cdn.shopify.com/s/files/1/0434/9083/6645/files/ribamebiku.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/70133564501.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/56150744409.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_off00009d95.bin
efbbbb473addf3c5423e1a5fe01325bb844cd799f88d94f23b426bc95e9ddf3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D95 5028 bytes
font_01_sfnt_off0000ae7e.bin
8eef624d1e7a24bb6f9be9d3bdce6e6dbe95e158647bc6c509aecd168c9a1a2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7E 10564 bytes

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