Malicious PDF — malware analysis report

Static analysis result for SHA-256 f607e7b6e968d1d3…

MALICIOUS

PDF

42.5 KB Created: 2020-08-06 12:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c2773934a578276328ae3f5b8a9e7eb SHA-1: ec45fa347d3c25d741caa0bb8f03fb904142b706 SHA-256: f607e7b6e968d1d307f28fb666356e7ed05da717dbc1cfc35cece6d2cb4602e6
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a link farm heuristic further suggests an attempt to lure users to malicious infrastructure, likely for phishing or malware distribution.

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=administrasi+tes+ist+pdf
    • http://files.andyknappmusic.com/uploads/1/3/1/4/131453682/f70a261938f9.pdf
    • http://files.nooneyart.com/uploads/1/3/0/7/130776657/dukipubokup.pdf
    • http://funewavuz.kimberlyfogarty.com/uploads/1/3/0/7/130738799/jejulelisikaxefedav.pdf
    • https://cdn.shopify.com/s/files/1/0451/4558/7877/files/bruker_nmr_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/xubafobejoxuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/banking_service_chronicle_monthly_magazine_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6223/0181/files/dfinition_de_la_gestion_de_la_relation_client.pdf
    • https://cdn.shopify.com/s/files/1/0431/9418/7933/files/40936464306.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/87680775848.pdf
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/springfield_model_187_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/pete_s_dragon_book_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/83313963656.pdf
    • https://cdn.shopify.com/s/files/1/0432/9694/8382/files/16636469536.pdf
    • https://cdn.shopify.com/s/files/1/0437/7883/4583/files/rekexebexosasexaget.pdf
    • https://cdn.shopify.com/s/files/1/0435/7138/0383/files/jojudum.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_off000062d5.bin
c6b9b55868fb982c1ed43b5ead883b8a5fe9e9cfcf44387a0ed2f3b14355f2a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D5 5144 bytes
font_01_sfnt_off0000743f.bin
3dda4a5b2b4df5d717ab03018615ced89bcc7ac95ac8d5987b3666eba53b7407		 pdf-font-stream PDF embedded font (sfnt) at offset 0x743F 12608 bytes

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