Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b0983b0789dcd53…

MALICIOUS

PDF

37.5 KB Created: 2020-09-14 03:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fb245b5f3c7d24be200c59b8d2271ab SHA-1: 82312c1b817e37b0d078b03982aaab3263a7b466 SHA-256: 4b0983b0789dcd530bd026cfbc5563c2ed4f2fbf33cb96eab61cbfcafc81aab7
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/pify?keyword=merrell+shoe+size+guide+uk', which is also listed as a malicious redirector. This suggests the document is designed to lure users to malicious infrastructure by posing as a helpful guide.

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.club/pify?keyword=merrell+shoe+size+guide+uk
    • http://jidesoxor.smallboatsalmon.com/uploads/1/3/0/8/130814328/1b3d4c50522d499.pdf
    • http://zazazurul.cwmdigitacollections.com/uploads/1/3/0/7/130739344/7f83f9dbca.pdf
    • http://files.cherokeecountyelections.com/uploads/1/3/1/1/131164076/2bf67b099d4f10e.pdf
    • https://cdn.shopify.com/s/files/1/0432/1184/9890/files/domezunotagonanab.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/kedadudorododepafewunuzol.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/15382669402.pdf
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/bfb_4_transcript.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1164/files/treemap_vs_hashmap.pdf
    • https://static.usrfiles.com/ugd/5438e3_9b6dfc11fe3443b4927b9f07bdac78be.pdf
    • https://static.usrfiles.com/ugd/9374a7_1be3244f22e7450a8d67068921544448.pdf
    • https://static.usrfiles.com/ugd/221f3a_ef85c88d282b40a29049b0f5387b1bc3.pdf
    • https://static.usrfiles.com/ugd/a86d68_3f515d1376cf4b5b8df09ba7dfd50cf4.pdf
    • https://static.usrfiles.com/ugd/e3834b_5c4d3c1eab2842f4a76ca23526583ae9.pdf
    • https://static.usrfiles.com/ugd/afe78f_c5abb5c9df8f4be78a56993fb4104d29.pdf
    • https://static.usrfiles.com/ugd/a2d007_9a80ba52ff4f499f8b1fd180245b5fd5.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000488a.bin
d7e43537467e48bca2847286401fdc0850189cb348bf8b603e463cde301467e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x488A 4692 bytes
font_01_sfnt_off0000589a.bin
cd04a3be985f32337d3e869c1f0b0c1b3c2c042b94b29793492792f6612c2101		 pdf-font-stream PDF embedded font (sfnt) at offset 0x589A 10016 bytes
font_02_sfnt_off00007ae4.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE4 4324 bytes

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