Malicious PDF — malware analysis report

Static analysis result for SHA-256 4113e5c8ae0ef6bc…

MALICIOUS

PDF

38.5 KB Created: 2020-09-17 14:18:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6831c68e12b4952264ee52dd3097eb87 SHA-1: 57932272caaa2a8f1d276032be2dbe51a6ca2338 SHA-256: 4113e5c8ae0ef6bc7c30f490c8c8f43529816c8a0641d4f8d458ccd9f4d6d545
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=superstar+jypnation+apk+2.6.1'. The document body, though heavily obfuscated, contains text related to 'Superstar jypnation apk 2.6.1' and the malicious URL, suggesting a lure to download a fake application. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to improve search engine ranking for the lure.

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.me/wix?keyword=superstar+jypnation+apk+2.6.1
    • https://cdn.shopify.com/s/files/1/0429/6939/9452/files/bitbucket_commit_as_patch.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/sukebazididoresogogurimer.pdf
    • https://cdn.shopify.com/s/files/1/0460/1066/3079/files/tozev.pdf
    • https://70e69bd2-3356-44ec-9d52-819c085a2cf5.filesusr.com/ugd/45fd81_e69e9ce641324aa5ba7c1fa595853c17.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0454/6658/3206/files/fitz_and_the_tantrums_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/9266/2688/files/adaptation_of_fish.pdf
    • https://4ee306b2-ce41-478a-ae9a-5b5ffc174503.filesusr.com/ugd/8db125_6b6ad0eaa58347008516574d53c7922c.pdf?index=true
    • https://80fbcfb6-d32f-4cfd-b2ea-1f1c5578d0cc.filesusr.com/ugd/c1de29_b6b4620ebda74a639e4c936ee3802b4a.pdf?index=true
    • https://306f2ecf-1df9-410c-8067-02094f363cbe.filesusr.com/ugd/89602e_76aaf08acea648b7be161e9cbb4bcddc.pdf?index=true
    • https://4ad4b049-a5ab-428c-9b22-944b9a4f4b1e.filesusr.com/ugd/a58b01_b74711578ef64b079092e74a85d89227.pdf?index=true
    • 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_off000058d2.bin
40888112164e049a54c84dfdc47acf8bae597014556e966caa9627583f696cdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58D2 5496 bytes
font_01_sfnt_off00006baa.bin
1dcd08c1602001b574ab933df82502979fb8f8f65063635608aa4d449b26c7d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAA 9920 bytes

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