Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e26b93d71a53096…

MALICIOUS

PDF

57.7 KB Created: 2020-08-21 08:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 497c0d3b2f9934e77aab31b4f0bef32b SHA-1: 03ad6e0da46d3b14fa4a23b77c313ee9e2e0f0e4 SHA-256: 4e26b93d71a53096762224a7cacde145a2b4863669114ea88817ca5bea3b2237
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=the+bard%2527+s+tale+apk'. This URL is presented within the document body, suggesting a lure to trick users into downloading potentially malicious content. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm designed to improve SEO for malicious content. The primary malicious URL is the most critical IOC.

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.cc/pify?keyword=the+bard%2527+s+tale+apk
    • http://vakaga.janetruthyoung.com/uploads/1/3/0/7/130775987/8139729.pdf
    • http://files.barbarabrewstersos.com/uploads/1/3/0/9/130969080/8277588e3.pdf
    • http://depik.verdeywg.shop/uploads/1/3/1/3/131380005/newuveviwur.pdf
    • http://lajivelap.artebom.com/uploads/1/3/2/6/132696067/3972911.pdf
    • https://cdn.shopify.com/s/files/1/0433/9132/0214/files/nicki_minaj_the_pink_print_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/jerumavumumuxisaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/wuful.pdf
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/48534639850.pdf
    • https://cdn.shopify.com/s/files/1/0450/2241/2958/files/86281362143.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/73674083627.pdf
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/38025027713.pdf
    • https://cdn.shopify.com/s/files/1/0432/8819/9328/files/ramiwuvixanuxatopiga.pdf
    • https://cdn.shopify.com/s/files/1/0437/6369/5770/files/dojugivobivuje.pdf
    • https://cdn.shopify.com/s/files/1/0438/1881/1552/files/35731318176.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8885/files/bogekonim.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_off000071d8.bin
94d32f9e14c6bd668f3b572c158728104b24af309bd158fa7e735a81530ddfb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D8 4644 bytes
font_01_sfnt_off0000820b.bin
e2896488290ad14db07a5bebb15637dee8edf1be7ecdb0b644b38ec5d060fa01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x820B 5236 bytes
font_02_sfnt_off000093d3.bin
5b38c43b8d18b61088026948b18bacf14aa7384796117f1fd5acac3cf0483670		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93D3 15436 bytes
font_03_sfnt_off0000c3df.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3DF 16092 bytes

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