Malicious PDF — malware analysis report

Static analysis result for SHA-256 535be0dd858d3363…

MALICIOUS

PDF

40.8 KB Created: 2020-08-03 11:37:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ffd72c9448413ee03e6149f55682444 SHA-1: e9536c51fdba5bc9bea982e55fc6f399e69d76c1 SHA-256: 535be0dd858d3363ab3268212fa067e5cd6fd914eea5780739cb5adee816bccb
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector link to 'https://ttraff.com/pify?keyword=advertising+media+definition+pdf'. This indicates a phishing or redirection attempt to a malicious site. The document body, though heavily obfuscated, contains references to the same URLs, reinforcing the malicious intent.

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=advertising+media+definition+pdf
    • http://files.pierrevanschalkwyk.art/uploads/1/3/1/0/131070737/2420c671897.pdf
    • http://files.whipperwillridge.com/uploads/1/3/0/7/130739835/kebukubekikotem.pdf
    • http://files.mentororchestra.com/uploads/1/3/2/8/132814949/143ef7073614e.pdf
    • http://xotuzifi.epictrails.org/uploads/1/3/0/7/130775868/gexofa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5419/5097/files/16025691195.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/tisolupebuxagazologef.pdf
    • https://cdn.shopify.com/s/files/1/0440/7705/6165/files/87379171335.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rofimoluxita.pdf
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/lubawoniraremaguwixeteb.pdf
    • https://cdn.shopify.com/s/files/1/0438/0930/8829/files/17349791482.pdf
    • https://cdn.shopify.com/s/files/1/0432/4550/2626/files/4334493361.pdf
    • https://cdn.shopify.com/s/files/1/0435/9235/1907/files/kigova.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/dd-_wrt_r7000_kong.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8685957786.pdf
    • https://cdn.shopify.com/s/files/1/0432/7912/2587/files/the_samurai_s_tale_audiobook.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_off00006102.bin
736cc871d199074e1789ce67313b17bed76945f61f931a93f66d59b4397d4b8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6102 5376 bytes
font_01_sfnt_off0000733f.bin
b3e62e4def7282495165b487e89a395f4984f678bacbb2af8fd371fc1dc9dd24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x733F 10272 bytes

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