Malicious PDF — malware analysis report

Static analysis result for SHA-256 19ec6e1ae0bdf4fb…

MALICIOUS

PDF

77.7 KB Created: 2020-08-03 21:33:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57d1887635673655bc5cd748bb3948eb SHA-1: 418a7eeedfa3e5845f76963c22cb6b8475589c44 SHA-256: 19ec6e1ae0bdf4fb1eb8789a42f8c18efecf50c38232d9d6ee3494fb53713d8a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic indicates a malicious redirector link to ttraff.com, which is likely used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting it's the primary lure.

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=aula+de+viol%25C3%25A3o+cifra+club+pdf
    • http://files.rwstoneware.com/uploads/1/3/2/6/132682235/7d523ddeeba0f.pdf
    • http://files.gzdcoaching.com/uploads/1/3/0/7/130775506/jodazudakubusido.pdf
    • http://files.callegarihorses.com/uploads/1/3/0/7/130776277/kazebamujabi-semupigobu-mifitu-wusexem.pdf
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/wurekozidizativo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/farotatuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/48546937858.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/poxopoko.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3250/files/wuxit.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/58674136580.pdf
    • https://cdn.shopify.com/s/files/1/0440/1148/7397/files/physical_chemistry_chang_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/autohotkey_auto_clicker_script.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/pidusipotobalijijejazisut.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8588/files/fojerusizimikok.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/42038109007.pdf
    • https://cdn.shopify.com/s/files/1/0429/0831/9903/files/lowes_anniston_al.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/xunuxasakuxelerovipazara.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_off0000c958.bin
d8b907802410e675ceca2784509e58a9dae2947c1b2ad43e3e0c02687eabed47		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC958 2952 bytes
font_01_sfnt_off0000d3e6.bin
4d40f360f38f01d0228a788a08191151d0720b8a17e54530d421dd2e45c9e3c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E6 5172 bytes
font_02_sfnt_off0000e4f5.bin
edc10bdaf74d2250ee207df2e71677aacf8cfd772e78af8c0bc5b64768dbfd25		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F5 17392 bytes
font_03_sfnt_off0001191d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1191D 4324 bytes

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