Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca5c048fb2ab76f…

MALICIOUS

PDF

44.7 KB Created: 2020-08-31 08:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6790175d5eae69b186540957ad3240e9 SHA-1: 8ba4ad5c84a34330d6eea196a1ca845a015b496e SHA-256: 2ca5c048fb2ab76f0c2116f4f109a96a875f6c7abc0f3039c3bba12aabee9eb7
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Rca tablets 16gb' and the malicious URL, suggesting a lure for a product deal. The primary malicious URL, https://ttraff.me/wix?keyword=rca+tablets+16gb, is likely used to redirect users to further 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.me/wix?keyword=rca+tablets+16gb
    • https://static.usrfiles.com/ugd/33a2e4_b4577d7bd6824d188e84c055652b0af2.pdf
    • https://static.usrfiles.com/ugd/79e0dc_af960dfe7e1c456fbc88143896f35596.pdf
    • https://static.usrfiles.com/ugd/0d089b_66f819502a37474c8c2617abce701b8a.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/gexajap.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/pupelekive.pdf
    • https://cdn.shopify.com/s/files/1/0434/2421/9288/files/26477581074.pdf
    • https://static.usrfiles.com/ugd/822ecd_fde8a2bb2a8943fca90037aba6a92fed.pdf
    • https://static.usrfiles.com/ugd/625844_8055e3d4797c43338ef34577d2a7ce06.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a9e319c0919441899b43172727d5cb5.pdf
    • https://static.usrfiles.com/ugd/fe83c3_20437c2e481345219eb436e11874cc4d.pdf
    • https://static.usrfiles.com/ugd/91e123_4981800da6d74115ba489ff8032f4aec.pdf
    • https://static.usrfiles.com/ugd/69695d_4ca73945abf44b0c894459c9675b130d.pdf
    • https://static.usrfiles.com/ugd/b8c837_172efa5ee21f4ac49c4e42bfffa82872.pdf
    • https://static.usrfiles.com/ugd/ce5d00_58d90c587eb24b5caf9743fe8116a831.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa5618555b194b2882f6d66162cbb146.pdf
    • https://static.usrfiles.com/ugd/b8c837_f76e49bd4db54925b40a48ba9ca7779d.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_off00006301.bin
51b43ef3c5180f44c0021e8c8286bb00b0c2583543a063b6953eef9c736c4caf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6301 5224 bytes
font_01_sfnt_off000074e0.bin
bbddfc5bcb575eb747ac9e1d5bfcc55e064ef2e2f445e647f43778bdb98cd446		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E0 15928 bytes

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