Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf2d543c3a070421…

MALICIOUS

PDF

55.8 KB Created: 2020-08-10 05:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00305df1bf38a5b6c1f92d12a241f509 SHA-1: 5d75ccec9a7790330cdafd0d86742ae20f541dab SHA-256: bf2d543c3a07042135189b0a745789f28df094fef059b463d65390173d3bbd4e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to obscure malicious destinations. The primary redirector URL, https://ttraff.cc/pify?keyword=bhagavatam+stories+in+telugu+pdf, is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to redirect users to malicious infrastructure. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.cc/pify?keyword=bhagavatam+stories+in+telugu+pdf
    • http://files.wendybusch.net/uploads/1/3/0/8/130813841/0e905d219bd.pdf
    • http://files.rcdavis-tellinstories.com/uploads/1/3/1/3/131383624/ebc2656e5828c5.pdf
    • http://files.shallowflycompany.com/uploads/1/3/0/7/130775350/4621034.pdf
    • http://files.duanebrownlaw.com/uploads/1/3/2/6/132681863/2250595.pdf
    • https://cdn.shopify.com/s/files/1/0433/9089/4247/files/exploring_psychology_ninth_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/xokumixilusutiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7827/8550/files/xezegasixedaguwejobufa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8713/3860/files/animals_name_in_english_and_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7350/files/pekewefutan.pdf
    • https://cdn.shopify.com/s/files/1/0437/8725/5960/files/androides_sonham_com_ovelhas_eltricas_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9465/4632/files/texetasapibufar.pdf
    • https://cdn.shopify.com/s/files/1/0432/4596/1383/files/93001990817.pdf
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/camarada_arenas_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0437/1267/5990/files/wigopeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/88735387982.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_off00005dbd.bin
6f44ab4a0073883ab9406f364596dddf11002cbea3bc78c44355756b6dae713d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBD 5564 bytes
font_01_sfnt_off0000708f.bin
75a247291101fa73b556a4e419c8d533389fac7d181e015257abb06aeaf29270
pdf-font-stream PDF embedded font (sfnt) at offset 0x708F 30196 bytes
font_02_sfnt_off0000b174.bin
3b7441a89effff42cb54be217bc9cf1bbc552a564e0a6ce6efb5a13c38d11a1b
pdf-font-stream PDF embedded font (sfnt) at offset 0xB174 9532 bytes