Malicious PDF — malware analysis report

Static analysis result for SHA-256 df15bb05f6371bc5…

MALICIOUS

PDF

42.0 KB Created: 2020-08-18 23:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a244d11d60b471da874ae2d5a587c2e4 SHA-1: ea45d0b32c81c51d3ac639d4d9fe223d22fd8e4a SHA-256: df15bb05f6371bc5dde9e9664d91fef07be7bab5ed50bef6b097e66c7c470cf5
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a phishing or malware distribution site. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to manipulate search engine results.

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.com/pify?keyword=cara+membuat+blog+via+hp+android
    • http://vuzolurit.noosadesignblogger.com/uploads/1/3/1/4/131407424/xatakiz_mudadevo_vobeloxu.pdf
    • http://zanisud.nicoleuphotos.com/uploads/1/3/1/0/131070109/zinutika.pdf
    • http://files.johndileonardo.ca/uploads/1/3/0/9/130969053/2246162.pdf
    • https://cdn.shopify.com/s/files/1/0428/1021/2519/files/76568818237.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botolewapaniwid.pdf
    • https://cdn.shopify.com/s/files/1/0440/8151/2613/files/rikidixomumakogufa.pdf
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/94838037523.pdf
    • https://cdn.shopify.com/s/files/1/0429/6802/3194/files/reretavizakazajivubigogav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0441/9478/files/6th_grade_math_fractions_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/rudujidopolovupuvutedonot.pdf
    • https://cdn.shopify.com/s/files/1/0430/5479/2866/files/72151468241.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/edexcel_igcse_human_biology_revision_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdf
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/langman_s_medical_embryology_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/kodimojemekawuvupagelogel.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_off000066c4.bin
d2fe2d99782fb50c8279a63814ca418b659a99c1df4f6bd53162d43741aecaef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C4 5300 bytes
font_01_sfnt_off000078a3.bin
2a3ad9bce850dd81c0b097e96a93c27904dd169a75b85868a593e81be880190a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A3 10128 bytes

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