Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1c5919514d3c645…

MALICIOUS

PDF

63.7 KB Created: 2020-08-31 02:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3da476e37917de0cb9812a5149bddd95 SHA-1: 9b8ed66b488d17a59e54dae91922543ef16afbc3 SHA-256: a1c5919514d3c645759fc94b40c73c9cf9286d45e428dd74c1c333ddc22a75ba
120 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Adobe cs6 serial number', directly linking to a suspicious URL. This URL is identified as a malicious redirector, indicating a likely attempt to direct users to a site hosting malware or phishing content. The PDF also contains a large number of embedded links, characteristic of a link farm designed to improve search engine rankings for malicious content.

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.ru/wix?keyword=adobe+cs6+serial+number+has+been+rev
    • https://static.usrfiles.com/ugd/0a0016_af4397e9a0084fce8362a30a8758aae1.pdf
    • https://static.usrfiles.com/ugd/6c032c_2e30bba08433430881813e8c49622379.pdf
    • https://static.usrfiles.com/ugd/b8c837_3af8dde4ee5e4547b5be98e8cbea9cf0.pdf
    • https://static.usrfiles.com/ugd/4c1554_23048aa13451451abeb576f5eaa57661.pdf
    • https://static.usrfiles.com/ugd/b914b5_0e77505c88f54cc3b71ee2c61ef5c9dd.pdf
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/defubilopolelatomebijemol.pdf
    • https://static.usrfiles.com/ugd/37428b_abc73cc539f2426bb641fddcd1e0ea2c.pdf
    • https://static.usrfiles.com/ugd/c3f59f_55dd39058cad4f1081fa5f37c0c83daa.pdf
    • https://static.usrfiles.com/ugd/d01287_89d64588d18f497c82e78e983e029f3b.pdf
    • https://static.usrfiles.com/ugd/51c472_7c0e7dc58f394d9d84ad55c516d58dbe.pdf
    • https://static.usrfiles.com/ugd/dd4472_b21a2f5a1b16485cb938525673170cf4.pdf
    • https://static.usrfiles.com/ugd/b8c837_b1522739be774e70bf829b1d004e010b.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d717c555f134249bce862f49eaed3ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_96a9542bb98a4523af1b387324864f68.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_off0000b71e.bin
71c3e03699ebbdb00ab6dda4d83952a79b313bfe354b82af8fdce7505aad8c5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB71E 5520 bytes
font_01_sfnt_off0000c9af.bin
68313dc7f8f8bb0e67b3849d9c9a85dbbc2efca0cf696faf0fd964df9ccab5cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AF 12568 bytes

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