Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d8bb817dee60cf9…

MALICIOUS

PDF

53.6 KB Created: 2020-08-02 05:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60499f58506be4cd6b9110ea48ba815d SHA-1: 1fb0aea2a574d768c803753d5efc868b987a6300 SHA-256: 8d8bb817dee60cf991a5ade498594c789c55f6089f851a16ade75ff2e42d8376
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a mass external PDF link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at `https://ttraff.cc/pify?keyword=barking+dog+exeter`. This suggests the document is designed to lead users to malicious content through a series of redirects. No scripts were extracted from this sample.

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.cc/pify?keyword=barking+dog+exeter
    • http://files.interactivevideomarketing.net/uploads/1/3/2/8/132816107/migidepof.pdf
    • http://files.johankoegelenberg.com/uploads/1/3/2/7/132740275/fuzepuwuti_sumajo_toxajuwolemuxo_nafowiviwi.pdf
    • http://files.dallasmendingminds.com/uploads/1/3/1/3/131380456/jolufamelodika-maditir.pdf
    • http://files.fingerhutpastries.com/uploads/1/3/0/8/130873708/ff00eb.pdf
    • http://files.miguel-castro.com/uploads/1/3/1/6/131606343/d3b8effd00.pdf
    • https://cdn.shopify.com/s/files/1/0450/2405/1358/files/rope_rescue_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/25932014880.pdf
    • https://cdn.shopify.com/s/files/1/0437/0720/3739/files/wepebijezinunimolo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9507/files/luripetibamuvek.pdf
    • https://cdn.shopify.com/s/files/1/0434/5040/0920/files/59565822650.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/gididimumekutibavewefed.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdf
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/tanizoruzet.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/15203779001.pdf
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/72512288151.pdf
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/verizon_moto_e_unlock.pdf
    • https://cdn.shopify.com/s/files/1/0434/9050/8960/files/72338750929.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_off000092fa.bin
7db4a3fad7dd25ac861d395f9dbc6775bc85d8aa53a050d1158d72e76e21aab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92FA 4964 bytes
font_01_sfnt_off0000a3f5.bin
883da747550aec55c2d5aa2504011d3e0e929205c344476ce218e5695aaad635		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3F5 10956 bytes

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