Malicious PDF — malware analysis report

Static analysis result for SHA-256 c177efb1a0e88f80…

MALICIOUS

PDF

42.3 KB Created: 2020-07-31 18:59:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f7ea98c7dfeddc293e43e22ebfa2f53 SHA-1: 0383b3161675770d191839d7184cc999f9c7cb1f SHA-256: c177efb1a0e88f80f0e621b5a0969dc5fc0ce60613ff62755ddb174044840938
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=instant+crush+tab'. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a link farm used to obscure the final malicious destination. No scripts were extracted, limiting the analysis of direct execution behavior.

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=instant+crush+tab
    • http://files.katrinadasilvaart.com/uploads/1/3/0/8/130874250/tirufi.pdf
    • http://files.light-sup.com/uploads/1/3/2/6/132681002/lolonegesositub.pdf
    • http://files.lubricantdistribution.com/uploads/1/3/1/4/131406831/5af302b2d70c.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/79175962012.pdf
    • https://cdn.shopify.com/s/files/1/0430/8497/2183/files/16905499899.pdf
    • https://cdn.shopify.com/s/files/1/0430/6419/7273/files/79135827504.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/minirefotapobizezuloxot.pdf
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/vaxedav.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/dijowororarutebij.pdf
    • https://cdn.shopify.com/s/files/1/0431/1751/0818/files/61959644468.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/bobadujotebejekulat.pdf
    • https://cdn.shopify.com/s/files/1/0438/9791/3512/files/82855595801.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/92755355691.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/85440278718.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/
    • https://cdn.shopify.com/s/files/1/043

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056f6.bin
ad5ac2c7c619335c3e7d2757f6f9d33749ca99e57f1d978211f6702bcb62d853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56F6 4540 bytes
font_01_sfnt_off0000663e.bin
ac6c9a77d3b5ad0b0e690951d3dcf745d2046f936289ba43be0db1583a673dfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 12548 bytes
font_02_sfnt_off00008e2f.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2F 4324 bytes

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