Malicious PDF — malware analysis report

Static analysis result for SHA-256 e20bdb200c1f0356…

MALICIOUS

PDF

49.0 KB Created: 2020-08-07 08:49:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02172777b61703a2614491f1e8d1957f SHA-1: cb4f6aee20a4a86667b61eacc1df3b27dcfdba9c SHA-256: e20bdb200c1f03563153e2de87b1c06cf30005a5694119b73731b23ebd420915
160 Risk Score

Malware Insights

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

The PDF document contains a lure related to a '6th grade social studies geography test' to entice users to click on a link. This link, 'https://ttraff.ru/pify?keyword=6th+grade+social+studies+geography+test+pdf', is identified as a malicious redirector. The document also functions as a link farm, embedding numerous other PDF links, many of which point to benign content on Shopify, but the primary malicious intent is the redirection to the ttraff.ru domain. The presence of advance-fee scam language further supports the malicious nature of the document.

Heuristics 4

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/pify?keyword=6th+grade+social+studies+geography+test+pdf
    • http://files.cedarhousequilting.ca/uploads/1/3/0/8/130874030/ad2883364e46.pdf
    • http://files.thesolidrockshop.com/uploads/1/3/0/8/130813797/zaxisufibuxuxigusi.pdf
    • http://files.easternrebelsnc.com/uploads/1/3/2/6/132695280/5401664.pdf
    • http://files.bodiicore.com/uploads/1/3/1/6/131636728/zulumilibere-nibirakulene-fetuzazazu-dewap.pdf
    • https://cdn.shopify.com/s/files/1/0440/0440/9494/files/6th_grade_reading_passage.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/cahills_vs_vespers.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/22876873218.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/95360202668.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/gejimolasiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/4046/3255/files/xugiraroribetasumeravot.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/23486468845.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdf
    • https://cdn.shopify.com/s/files/1/0428/6581/9814/files/buwuso.pdf
    • https://cdn.shopify.com/s/files/1/0438/2146/5757/files/ramiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/78547307125.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_off0000801a.bin
de6e0bf500694f55fcf17b4ed22245fcda7d9c41d7007dfec5841111f94b5a38
pdf-font-stream PDF embedded font (sfnt) at offset 0x801A 5576 bytes
font_01_sfnt_off00009317.bin
271aa9296f9a20273f2a809c327ea3d5587f3cb7996d90318f800cfc2ee28298
pdf-font-stream PDF embedded font (sfnt) at offset 0x9317 10352 bytes