Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f50867995eba6ce…

MALICIOUS

PDF

48.2 KB Created: 2020-09-02 22:26:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79fb4bab8ded8c8a079f94fcc3a9e8ca SHA-1: 9b62c8459616ddb3fbbd1d1db3f79a2f0c551545 SHA-256: 8f50867995eba6ce42924713808e2e33b677ea0afbef5765a85bb8621a725b0b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The PDF also contains a link farm heuristic, indicating a large number of external links, many pointing to Shopify. The primary malicious URL is https://ttraff.link/wix?keyword=yung+1+fit+guide, which is likely used to redirect the user to a malicious site. The document body text and embedded links suggest a lure related to a 'fit guide'.

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.link/wix?keyword=yung+1+fit+guide
    • https://cdn.shopify.com/s/files/1/0431/8520/9506/files/kuxijiwukariwuzowikiwoke.pdf
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/kedefe.pdf
    • https://cdn.shopify.com/s/files/1/0428/2974/2246/files/37314228938.pdf
    • https://static.usrfiles.com/ugd/017c44_041d33f528944c8d9e52167e7bcd699d.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa232c00dec347458a860aaa1b17f07f.pdf
    • https://static.usrfiles.com/ugd/804ff6_19b42abc64a44926a391c4b26c2aa6b5.pdf
    • https://static.usrfiles.com/ugd/fac845_81efb7848793447a93c4a57eb53568b0.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8173/files/zovebatotixilewamer.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/44842528063.pdf
    • https://cdn.shopify.com/s/files/1/0440/5500/3286/files/8218917909.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/butlins_skegness_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/2730/8454/files/lutebanibibogevo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a55.bin
c26c25ded6f0f7a2385bec096bc7d12744211ec4b2809b8f6e3c4f324128a7bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A55 4344 bytes
font_01_sfnt_off0000791e.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x791E 1800 bytes
font_02_sfnt_off000081ac.bin
1763bfced7627b29c1284383e560e6ea075a939f556f56ef37eb844c944e7eb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AC 10776 bytes
font_03_sfnt_off0000a619.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA619 4324 bytes

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