Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f3ff37f90e6ffe…

MALICIOUS

PDF

72.7 KB Created: 2020-09-17 12:39:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff160ab65ad1539720c2e25cd4a1b55a SHA-1: 1f84dafd06dc4748b512053018995d789bbcf460 SHA-256: 19f3ff37f90e6ffe99d0c15d7f46ee1ec69e1fba24036687a33a45e10708944d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, which are likely intended to manipulate search engine results and redirect users to malicious content. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure. The document body contains a URL that appears to be part of this redirection scheme. No scripts were extracted from this sample.

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/wix?keyword=sober+gamzee+fanart
    • http://jukuzobel.grillsofms.com/uploads/1/3/1/3/131379732/7ca28b1f1d272fe.pdf
    • http://dabuti.literacyforbigkids.com/uploads/1/3/0/7/130776089/pudisomo_gamemal_nazuwarigizovip_tuduragexefixe.pdf
    • http://tilom.elsdendesign.com/uploads/1/3/2/8/132814930/nadikufumivub-dixopesizanus-jajezusafuxa-lovunenivan.pdf
    • http://lituruz.matthiasnolte.com/uploads/1/3/1/0/131071256/4c32c3.pdf
    • http://files.flowersmakescents.biz/uploads/1/3/1/4/131437454/8539206.pdf
    • http://konelelu.campfellows.com/uploads/1/3/1/4/131409090/megurolanajasabef.pdf
    • http://nutotigum.kristinfurbeck.com/uploads/1/3/0/7/130739476/fituwedonulo-nesoxiwefoxuz.pdf
    • http://files.jenniferbiedermannjewelry.com/uploads/1/3/1/4/131407692/5811316.pdf
    • https://59738c9e-9913-4350-a83c-ff0d9f0380a0.filesusr.com/ugd/3be48b_195635c3228d483fb19dbe375b8077d0.pdf?index=true
    • https://99987683-c395-4ee7-b9f4-2f5354ae5a7d.filesusr.com/ugd/0cd019_97b89ea72c7f4b49be7f9dd32c5f0325.pdf?index=true
    • 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_off0000bce2.bin
f839b356d062736267ab14e13bac6cb357bf32d51e74ba9c10fe64df3e85a4f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCE2 4912 bytes
font_01_sfnt_off0000cd78.bin
be0d2da61e810e25647e47f4f081e71223a47cf0c1734ff8feb3ed0b18394f1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD78 10852 bytes
font_02_sfnt_off0000f2c6.bin
9075f82eca983399cd796a0d973342fb68a133950e51a66b56e85bdc3d341901		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C6 16224 bytes
font_03_sfnt_off00010820.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10820 4324 bytes

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