Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f118b95814ec8bd…

MALICIOUS

PDF

39.5 KB Created: 2020-08-21 20:16:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d245cfeffd3bc431b87ed86c4f378f7 SHA-1: 7b37198f66655c2d6f198fe0bbda9bdea927df53 SHA-256: 8f118b95814ec8bd3d49ecf2595e4e3136416589665a90018a37161255a3532d
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is associated with malicious activity. Additionally, it features a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. The presence of a 'download button' heuristic further supports the lure of downloading a file. The document body contains the malicious URL and text related to downloading an app, reinforcing the social engineering aspect.

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=vidmate+movie++app+2018
    • http://files.moanalipopo.com/uploads/1/3/1/1/131163635/rajixe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/radelabilajirirobokesef.pdf
    • https://cdn.shopify.com/s/files/1/0436/5628/2265/files/57282541515.pdf
    • https://cdn.shopify.com/s/files/1/0429/1729/8342/files/7300840126.pdf
    • https://cdn.shopify.com/s/files/1/0438/3126/3394/files/vojidorovoranajatejaji.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/pijenoxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69901941500.pdf
    • https://cdn.shopify.com/s/files/1/0441/0372/9304/files/2d_shapes_properties_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/878988517.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_off00005ce7.bin
960dc8b74348ba77a19ab62c38dd161b54ab9070365a115201d0be50af0c31f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE7 5344 bytes
font_01_sfnt_off00006f16.bin
294f671043d63f1d7094b0322130486390c6fdd90150f04893af7e0e877bb793		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F16 10060 bytes

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