Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9f30c79fb43c7d6…

MALICIOUS

PDF

52.5 KB Created: 2020-08-15 22:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dacc871c050f929d0af8e632ab5cdba SHA-1: 5100730d7c15a3a58a6a931f2eee21d8bda418fc SHA-256: d9f30c79fb43c7d6c46f11f525d88690d22270b4bed91b6a49abbdc66f18e7fb
120 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, which in turn leads to other URLs. The document body, though heavily obfuscated, contains a URL that matches the one identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of the exact payload.

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/wb?keyword=surah%20nas%20english%20translation%20pdf
    • http://dimeluvev.gtmhic.com/uploads/1/3/1/8/131871390/3fe58a854801b5.pdf
    • http://nugoz.oxfordfitfun.com/uploads/1/3/0/8/130814070/9203516.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/xowunoxirinika.pdf
    • https://cdn.shopify.com/s/files/1/0433/1805/0984/files/4172350976.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/alternative_energy_sources_reading_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/fundamentals_of_managerial_economics_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99237037604.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6615/files/catalano_colori.pdf
    • https://cdn.shopify.com/s/files/1/0432/0745/8975/files/nonowodemijatidagolubil.pdf
    • https://cdn.shopify.com/s/files/1/0435/2904/4119/files/agile_project_management_with_scrum_microsoft.pdf
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/26893947800.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/78691399642.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/sininowupabituxinari.pdf
    • https://cdn.shopify.com/s/files/1/0452/5893/2381/files/celestial_navigation_terms.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5370/files/calorimetry_virtual_lab_worksheet_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2874/files/53568492896.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
stream_005_off00009f74.bin
cb5b111e28c1fc8c385979ce2969b11ff59ad5e0c34d8962ab2c5a83ef23febc
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9F74 21020 bytes
font_00_sfnt_off0000685d.bin
ca4acc409c5ac4fd35fef04a5e5e42d3cee5034ac03e75fbbb29525c4fc1d693
pdf-font-stream PDF embedded font (sfnt) at offset 0x685D 5404 bytes
font_01_sfnt_off00007ab4.bin
baf59c62db31407d0de120abbe4a8b8e805b555aba9cf78bce05be099e9acaa0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB4 11184 bytes