Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f5c741576e8aff2…

MALICIOUS

PDF

45.4 KB Created: 2020-08-19 22:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fb21198366ecf9aca9324a32cd32d1a SHA-1: 78b01ef9e4c7ee73e2eef20d17120f2534c47815 SHA-256: 4f5c741576e8aff2e35d63932b1b30734ddf36696a0527e7c3f8758c7ed14581
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external resources. The document body, though partially corrupted, contains a URL that appears to be the primary lure. The primary malicious URL is https://ttraff.ru/pify?keyword=suara+burung+cendrawasih+merah, which is likely used to redirect the user to a malicious site.

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.ru/pify?keyword=suara+burung+cendrawasih+merah
    • http://wesodigar.shishisalon.net/uploads/1/3/0/7/130739140/04614b30f9ea.pdf
    • http://files.visionquest50.com/uploads/1/3/0/7/130776110/abaeffa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/80782971150.pdf
    • https://cdn.shopify.com/s/files/1/0433/8574/9665/files/zurijaxadokumetijagovuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/drugs_acting_on_autonomic_nervous_system_medicinal_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/6742476103.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/garimovomoremosumani.pdf
    • https://cdn.shopify.com/s/files/1/0433/0360/0283/files/bokiwufel.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/22778763983.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/24366794670.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/dosaleleraruditof.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eb8.bin
66eb11a87268a6d17d4ecee4a5aa3226cd5f5ad8f88996afbd4f108f2f83c279		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB8 5656 bytes
font_01_sfnt_off000071d0.bin
cba203ccb622a51319004b3235486a3dfd5191484f0797d7cb6ff3c234b1d004		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D0 9816 bytes
font_02_sfnt_off000093bb.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93BB 16204 bytes

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