Malicious PDF — malware analysis report

Static analysis result for SHA-256 9766051671ea450d…

MALICIOUS

PDF

45.1 KB Created: 2020-09-02 01:36:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 864cefeff8b4fc4cce737fff57044b59 SHA-1: 7c556d89c27d8de91fe519c722f30164c1ded23e SHA-256: 9766051671ea450d2bbf627ae0d2ec58eeac1588e1899e0e50f394d796037c92
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing "Morrisons cafe menu pdf" and the malicious URL. The presence of numerous external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to disguise the malicious redirector.

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=morrisons+cafe+menu+pdf
    • https://cdn.shopify.com/s/files/1/0434/7350/2361/files/potamonakupofiriladopi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4342/2359/files/44559457950.pdf
    • https://cdn.shopify.com/s/files/1/0437/1424/8857/files/60351837564.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/soxebakex.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/62143570546.pdf
    • https://static.usrfiles.com/ugd/756799_295c200fcf8f4b15a31ae152431ac052.pdf
    • https://static.usrfiles.com/ugd/7041e4_f622e97278054f76ae8036c74ae9eea6.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bd8a78e42484b0187cfcc6f3640ee6e.pdf
    • https://static.usrfiles.com/ugd/b8c837_35ae121b1e99417382783ef8cb8a56e8.pdf
    • https://cdn.shopify.com/s/files/1/0460/3923/6767/files/catholic_answers_life_support.pdf
    • https://cdn.shopify.com/s/files/1/0429/3355/1260/files/finupaja.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nalekubaserigudopen.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_off00005de6.bin
d70f9fc57339c9467cf5537e293cdd665ab3ab7e6a23281a455da6877286e965		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE6 5276 bytes
font_01_sfnt_off00006fcc.bin
dca38620028b347ae45ec91ce99ebd897120274fe39fabff8538dfeaa076e363		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCC 10016 bytes
font_02_sfnt_off00009259.bin
c691c2dc236ff1c3149f8178f30dcb30456d959af2bd230901b395ad55359d31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9259 16208 bytes

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