Malicious PDF — malware analysis report

Static analysis result for SHA-256 56070db2956ca56d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-31 05:42:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8901d75764a4f989a493ab9db8135bbe SHA-1: 214f5e5601f3f33199c97cccfa70ea617fdade9f SHA-256: 56070db2956ca56d448897e74eda45a60d95fbc045c7600da63da3b293e89cb3
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=left+hand+piano+accompaniment+patterns'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF link, suggesting a lure to a malicious site under the guise of providing piano accompaniment patterns. No scripts were extracted, and the primary malicious activity observed is the redirection to a potentially harmful URL.

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/wix?keyword=left+hand+piano+accompaniment+patterns
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/satidexato.pdf
    • https://cdn.shopify.com/s/files/1/0432/4468/3432/files/vinokojamifafusajeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/femaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0607/4778/files/benzetacil_bula_anvisa.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/jogijuxasabake.pdf
    • https://cdn.shopify.com/s/files/1/0433/7565/7121/files/que_es_autoestima_baja.pdf
    • https://static.usrfiles.com/ugd/b8c837_608f256606fc4cddb6c01466de91364c.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_b065e98519e14f0cae682e1f9680a561.pdf
    • https://static.usrfiles.com/ugd/dc51bb_6ca30ee1a0b14b4c8a7b1bd9113103d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf1334d52f994bb58815969c4f0240c9.pdf
    • https://static.usrfiles.com/ugd/73f3b0_6c4b8bce66f244f8bb5b022ea4be0189.pdf
    • https://static.usrfiles.com/ugd/61f964_9328532b24254f839817192ac2771c76.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_off00006376.bin
b4966097f8ec96252851d5442b878c738bf9497b1df803901cc20ba6dfb5c5a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6376 5304 bytes
font_01_sfnt_off00007553.bin
7f5f7768787b124b971ca3166fc648752816ae8fc8ed3247887826a54b3d35ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7553 10072 bytes

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