Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1532622de815b28…

MALICIOUS

PDF

37.2 KB Created: 2020-09-01 05:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7698e536b1b39a30075ddfa586533946 SHA-1: 275195aeeed170b8c8b831b9b7364923b6f49a1c SHA-256: b1532622de815b28ab7c37768eb81ac14f62165400496879d59fe076c5d371ad
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/wix?keyword=dinosaur+egg+craft+template'. This link is presented within the document body, disguised as a craft template, to entice users into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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.link/wix?keyword=dinosaur+egg+craft+template
    • https://cdn.shopify.com/s/files/1/0436/9180/2777/files/39783018152.pdf
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/26650254612.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23158701460.pdf
    • https://static.usrfiles.com/ugd/b8c837_46a55330e7064069b522c10be6581866.pdf
    • https://static.usrfiles.com/ugd/b444d4_b40afa4d9ab84120be6f1cb0c2d1ba4b.pdf
    • https://static.usrfiles.com/ugd/b8c837_97715f0395ef4dd58396046bfa7ab6f4.pdf
    • https://cdn.shopify.com/s/files/1/0440/2610/1925/files/15686320859.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/60844529238.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/brasil_colonial_resumo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0134/7226/files/amar_chitra_katha_bengali_download.pdf
    • https://static.usrfiles.com/ugd/83e24f_58b479c4e3a348299012a06f5a74705f.pdf
    • https://static.usrfiles.com/ugd/8b4172_2b97f3059b774dd5b2fdbdf51c34242f.pdf
    • https://static.usrfiles.com/ugd/b8c837_5862d2c5c5884edd852281edacd75649.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_off000053e8.bin
ecb6caedc3ccfacc8370852b553570438925ab685f6ab7a2bb60135ada9b2575		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E8 5332 bytes
font_01_sfnt_off00006602.bin
18c228e9bba041dbc29480829c0bc6218e867f9e070ec966aa38da9e9f248740		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6602 9976 bytes

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