Malicious PDF — malware analysis report

Static analysis result for SHA-256 27cd7a30a75efd29…

MALICIOUS

PDF

45.3 KB Created: 2020-08-10 15:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dec1f0cd989d0d5bb1b3ccc636382d9 SHA-1: 565893cf0cd956cdb0bc83cafeac4cbdca741999 SHA-256: 27cd7a30a75efd29d650522f457af44a1794d8f5bcc0323b3c9140feb205b338
120 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.com, which is disguised as a PDF about coronary heart disease. The document also functions as a link farm, pointing to numerous other PDFs hosted on Shopify. The primary malicious intent appears to be redirecting the user to the ttraff.com URL, likely for further exploitation or phishing. 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.com/pify?keyword=kasus+jantung+koroner+pdf
    • http://raradijet.videotributes.net/uploads/1/3/0/7/130776449/5142035.pdf
    • http://files.amcommunications.org/uploads/1/3/0/9/130969790/lipetov.pdf
    • http://files.libbyeyecare.com/uploads/1/3/0/7/130775516/02816ef4.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/gizuzitebevu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8947/7273/files/art_forms_in_nature_the_prints_of_ernst_haeckel.pdf
    • https://cdn.shopify.com/s/files/1/0432/8967/3888/files/wudomiwonevusov.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/fijewimozetod.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/61629381563.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/bakit.pdf
    • https://cdn.shopify.com/s/files/1/0451/8517/1607/files/absolute_value_inequalities_test.pdf
    • https://cdn.shopify.com/s/files/1/0447/5843/3943/files/assam_map_with_district.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/fizodumoxewodapiguwuvi.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_off0000735c.bin
19606d4df1de6d7a2fcc7787e7cf9db3351f21e815a6eae88992947330313413		 pdf-font-stream PDF embedded font (sfnt) at offset 0x735C 5284 bytes
font_01_sfnt_off0000856f.bin
44f2d63b65a76c2a3a714d109fcf5601fc342afa6254baf692175cc1593f066b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x856F 10368 bytes

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