Malicious PDF — malware analysis report

Static analysis result for SHA-256 43403079668b37d1…

MALICIOUS

PDF

38.0 KB Created: 2020-08-20 01:14:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d88c8c78755fd685dd490d90fbf5287 SHA-1: 6c7f6cdd5676730c25e887bd636b353bb39029ed SHA-256: 43403079668b37d1b433522edfae5fad6c4f30c7461f1e46ab20ae8f79a8a1da
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that is identified as a malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure to trick the user into clicking the link. The redirector URL points to ttraff.com, which is known for distributing malware. The PDF also contains a large number of embedded links to various Shopify-hosted PDFs, likely as part of an SEO poisoning or link farm tactic.

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=free++vector+business+letterhead+template
    • http://mokopotog.evangelistictempleofiam.net/uploads/1/3/0/7/130740497/vuxokume_jurivomovitanow_faxetisuzus.pdf
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/33371643337.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/copper_flotation_process_flowsheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/cisco_6500_bgp_configuration_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/zodobabofakupid.pdf
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/mebugamokukidobuniduvupox.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8573/files/domestic_mail_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/0906/3582/files/66758804298.pdf
    • https://cdn.shopify.com/s/files/1/0434/3293/5574/files/verizon_bill.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_off0000572f.bin
f7773f21276821554c85b0668be41663807385df5ccf34c1e41b5fe91203193a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x572F 5468 bytes
font_01_sfnt_off00006996.bin
0449ce8b5fe057894cd1474f0f054829653bda2a7451e01b1d80b4a578520b11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6996 9964 bytes

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