Malicious PDF — malware analysis report

Static analysis result for SHA-256 de49bfa2fb2de01b…

MALICIOUS

PDF

45.3 KB Created: 2020-08-19 03:44:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9be58de791b2e7abe3e84cb8a23d89e7 SHA-1: facb7e35e9038f8e3387f54ca59127e841b11b60 SHA-256: de49bfa2fb2de01b508a9430c8b5d35f592235918d8a9014d2746ddf482fce57
160 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests a lure to a malicious site, potentially for phishing or to download further malware. The presence of a password-protected archive lure heuristic indicates an attempt to bypass gateway scanning.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=root+android+10+oneplus+7+pro
    • http://xafamam.stopdemonicencounters.com/uploads/1/3/1/3/131383483/duxovozabupugul-wasusinusu-lokakisan.pdf
    • http://files.photographsbychristinacordero.com/uploads/1/3/1/3/131378988/f379244.pdf
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/fafutevimos.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/bwv_542.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/form_ds_3053.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/sudekuvatijesobarefefe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8535/6449/files/64229905226.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/9549317347.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7099/files/peltier_effect_refrigeration.pdf
    • https://cdn.shopify.com/s/files/1/0430/6088/7705/files/wepuwixifefawegobis.pdf
    • https://cdn.shopify.com/s/files/1/0433/2525/9944/files/80860507298.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_off00006d6d.bin
7dc749cfbe9e41b322eec6474691f290f7729bbdcb9224acaab7ccbfe8f1572b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6D 5232 bytes
font_01_sfnt_off00007f4b.bin
1bfb48f2d60b1632d9062ca11ecc38ea723080dd18b9188e9181786101ba3514		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4B 13076 bytes

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