Malicious PDF — malware analysis report

Static analysis result for SHA-256 f964e1dded2d7299…

MALICIOUS

PDF

37.4 KB Created: 2020-08-17 02:26:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79cecdac9ac4b13cba9a18e07d9059cf SHA-1: 7033250ba39e5bf37871ed7cb6b703255d1c3f5c SHA-256: f964e1dded2d7299e53a8c4f8c8b26f784445bed3a4c595758a7cb079ad6a3c5
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL that is likely intended to lure the user into clicking on it. The PDF_SEO_LINK_FARM heuristic suggests a large number of links were generated, likely for SEO poisoning or to obscure the malicious redirector. No scripts were extracted from this sample.

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=sadness+and+sorrow+naruto+flute+sheet+music
    • http://nebodal.lukespencetrumpet.com/uploads/1/3/1/6/131636947/28a438cbdb649e5.pdf
    • http://sajuzima.padenpierry.com/uploads/1/3/0/7/130776757/b09f782dc.pdf
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/fepaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1255/files/50031851357.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/bafipef.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8973/files/hp_laserjet_p1102w_wireless_setup_without_cd.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/teoria_de_la_jerarquia_de_las_necesidades_abraham_maslow.pdf
    • https://cdn.shopify.com/s/files/1/0431/2141/0210/files/45874293189.pdf
    • https://cdn.shopify.com/s/files/1/0434/5544/7201/files/daffodils_poem_william_wordsworth.pdf
    • https://cdn.shopify.com/s/files/1/0431/9998/7873/files/laneserividoverop.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/49548357687.pdf
    • https://cdn.shopify.com/s/files/1/0429/5449/0022/files/76364522016.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_off0000546c.bin
1a21e0bb1a6e6f62780c9e3dbc756a408464f06dd1abb8c19b95523a5fcd6ad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x546C 5456 bytes
font_01_sfnt_off000066d1.bin
a4a6faac54b6997153753a95f9b28182be0cd9b4a33b2a3b86b3ec6867654c9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D1 9864 bytes

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