Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f19b875b83f63a…

MALICIOUS

PDF

48.9 KB Created: 2020-09-19 07:06:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 023fa5652cbba600ee69f4c13a6c96a0 SHA-1: 7c161e8a8926d720b1dc492fecf6f0699221f345 SHA-256: e2f19b875b83f63a47445bf624ca87e94fbc181c3a01da407c1d7b989f272f0a
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. It also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm. The primary malicious URL identified is https://ttraff.link/pify?keyword=instant+pot+ip+lux+80+manual, which likely serves as a lure or initial stage for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/pify?keyword=instant+pot+ip+lux+80+manual
    • http://powobi.yulinng.com/uploads/1/3/1/4/131437981/1439353.pdf
    • http://kobuwuj.mvillstyles.com/uploads/1/3/1/4/131407635/b8c953f5.pdf
    • http://vubevun.hilgar.com/uploads/1/3/1/4/131407535/zifumoxerofeva.pdf
    • https://cdn.shopify.com/s/files/1/0439/5496/2590/files/abbyy_flexicapture.pdf
    • https://cdn.shopify.com/s/files/1/0439/5224/2856/files/british_parliamentary_debate.pdf
    • https://cdn.shopify.com/s/files/1/0430/6262/4405/files/nojukogumovutumuketube.pdf
    • https://cdn.shopify.com/s/files/1/0432/7545/2569/files/57493882367.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/cause_and_effect_exercises_for_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/29768655013.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/blanchard_macroeconomia_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0432/0428/0481/files/24265901930.pdf
    • https://cdn.shopify.com/s/files/1/0438/4070/0578/files/95115810123.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_off0000827b.bin
b9eab905e53525359e93e58251ceebf4353fac162dcb1f72433d1bad22591604		 pdf-font-stream PDF embedded font (sfnt) at offset 0x827B 5212 bytes
font_01_sfnt_off00009424.bin
d88afa51e82d3470ac5bdc9c035530ff44da6cd188e5986032f1a3fef7e0a19d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9424 10336 bytes

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