Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f0ba866687365e…

MALICIOUS

PDF

41.6 KB Created: 2020-08-02 17:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 911842caddc8241ebdfa72f3b290b701 SHA-1: 5cb39bc25aaf1361e46c9d0a9335b925ba6781f4 SHA-256: e3f0ba866687365ecce598c1022f4bd6b94784c016fa612153556394fcaeab10
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF document contains a mass external link farm, with the primary malicious link being a redirector to 'ttraff.cc'. The document body text, though heavily obfuscated, contains the lure 'Doosan lynx 220 manual pdf' and the malicious URL. The presence of numerous PDF links, many hosted on Shopify, suggests a SEO poisoning or link farm tactic to distribute the malicious payload. 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.cc/pify?keyword=doosan+lynx+220+manual+pdf
    • http://files.lyndseygauthier.com/uploads/1/3/1/8/131856041/nomimikogujepof_tulixub_mekejasabudud_lipinusi.pdf
    • http://files.donedberg.com/uploads/1/3/1/4/131438195/pedisu.pdf
    • http://files.aponysparadiseequinerescue.org/uploads/1/3/1/4/131453021/7f77925.pdf
    • http://files.visionstheperformingarts.com/uploads/1/3/1/4/131407179/jesatebedalug.pdf
    • http://files.chsmarketplace.com/uploads/1/3/1/8/131871977/3927535.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/mugik.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2028/files/mokepaje.pdf
    • https://cdn.shopify.com/s/files/1/0435/1534/7103/files/ximamizipunesigeburulap.pdf
    • https://cdn.shopify.com/s/files/1/0438/2749/5069/files/60458133625.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/ham_radio_technician_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/10248532555.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/99508033451.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/miximura.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/62613479175.pdf
    • https://cdn.shopify.com/s/files/1/0433/6356/5727/files/dikisu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9486/6088/files/guxunusaka.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_off00005a86.bin
f75ca2d12f404e1deacc86b0bd77022bfb58ca251fca1955a3c7eb80560b4538		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A86 5532 bytes
font_01_sfnt_off00006d60.bin
4cce2c972ad8eabcfe4ddfd1e24f335b18e61142faf5ccdfec27075005bd801b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D60 14312 bytes

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