Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ea3b720538a131…

MALICIOUS

PDF

56.4 KB Created: 2020-08-31 04:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d8a06ac13532599b42579de3d3c338b SHA-1: 395f5edcb360f26988492756c9ea745562f6c791 SHA-256: d9ea3b720538a13103b2e704a8885788bf640ae723a2b5e7490f9429b9c73b96
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=best+coffee+grinder'. This URL is presented within the document body, suggesting a phishing or scam attempt to redirect users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify.com, likely for SEO manipulation or to host 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.cc/wix?keyword=best+coffee+grinder
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/75100210075.pdf
    • https://cdn.shopify.com/s/files/1/0429/8339/1395/files/zoxer.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdf
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/18953017834.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/18126760435.pdf
    • https://cdn.shopify.com/s/files/1/0445/6821/5716/files/critical_care_nursing_made_incredibly_easy_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/2892/3046/files/bupuderixajaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/wwe_shield_theme_song_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/pafenekodon.pdf
    • https://cdn.shopify.com/s/files/1/0436/0686/8131/files/form_i_730.pdf
    • https://static.usrfiles.com/ugd/41a0b6_edfc51d051ec41bbba89a03a5a00fecd.pdf
    • https://static.usrfiles.com/ugd/8b2c09_1e3749451a3a49b0bdb1955397b6cb1d.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009377.bin
6ccb095d1b6233f9cd8f4d506f95cae91894630553fccf1354c1410aa5a09194		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9377 4784 bytes
font_01_sfnt_off0000a3c6.bin
22edf942bb09ebf664eba93ddb50315ef8ecc5cb88d8972f4cf61fb8db65cbe3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C6 10324 bytes
font_02_sfnt_off0000c717.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC717 4324 bytes

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