Malicious PDF — malware analysis report

Static analysis result for SHA-256 508f08645578d469…

MALICIOUS

PDF

42.7 KB Created: 2020-07-25 16:53:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49e5802c75ec4fa5bbd2c400a6fcb17e SHA-1: df187a4542b5c420858e90d9fe06758146dbd5fb SHA-256: 508f08645578d46984fcc2d2fc33573c969ebe3008c0815611751e4223000a76
120 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=game+counter+strike+apk%252B+data'. It also contains a PDF link farm heuristic, with numerous links hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'Game counter strike apk data', suggesting a lure for users interested in downloading game-related files. The primary malicious IOC is the redirector URL.

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=game+counter+strike+apk%252B+data
    • http://files.rogueandfoxfloral.com/uploads/1/3/2/6/132696233/6b4f312.pdf
    • http://files.splashpaintingandwine.com/uploads/1/3/1/8/131871814/1450637.pdf
    • http://files.thehivepto.com/uploads/1/3/0/7/130775665/924aaab7fc284.pdf
    • http://files.rogueandfoxfloral.com/uploads/1/3/2/6/1326
    • https://cdn.shopify.com/s/files/1/0428/5713/6294/files/90599462368.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/95768109197.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/jadojitukuvozu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/gadikazarajawab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdf
    • https://cdn.shopify.com/s/files/1/0428/6483/6764/files/pexuza.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/xojofajaximuru.pdf
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/fisofar.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/64155466857.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/36002063750.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/larokadujamebajabuvenero.pdf
    • https://cdn.shopify.com/s/files/1/0432/6480/2982/files/lilafutakigapapuxojom.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_off00006b11.bin
a8196002ba00241624b62206039a7007220914395748ae6d6d4935a26df7371c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B11 5164 bytes
font_01_sfnt_off00007c88.bin
e367a3be28852bad354c84abfe4c62ca0eb0d7009f3907a2a2720d8b297591b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C88 9792 bytes

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