Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92a668225686a63…

MALICIOUS

PDF

42.1 KB Created: 2020-08-12 13:27:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dd6756208de6879e1ef31c90b3ff3ae SHA-1: e5c542644230d1141392afbc82e53bee7e8eebf7 SHA-256: d92a668225686a6385f0c806d63d8909c1adfe2a142be52e6ec8ab93ef2c7608
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Nandos menu mauritius pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links, many pointing to Shopify, further supports the SEO link farm heuristic, indicating an attempt to manipulate search results or distribute content through a seemingly legitimate platform.

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.com/wb?keyword=nandos%20menu%20mauritius%20pdf
    • http://files.molim.net/uploads/1/3/1/4/131483005/eeee9.pdf
    • http://pulemu.godshealingprocess.com/uploads/1/3/1/3/131398455/912dce.pdf
    • http://topiwona.annasalimon.com/uploads/1/3/0/7/130776611/e37316303d86.pdf
    • https://cdn.shopify.com/s/files/1/0430/0472/3349/files/barron_s_sat_biology_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/5240/7704/files/wiserajemusetemopasexujo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5804/3807/files/xitudopa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/zujofezozefadiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/4406/8773/files/tojuregalena.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0438/1815/6192/files/circulatory_system_of_heart.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/cardiology_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/mifibejijesuxarivusubewu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/punedukemuniri.pdf
    • https://cdn.shopify.com/s/files/1/0435/6544/9371/files/91512650560.pdf
    • https://cdn.shopify.com/s/files/1/0448/3137/5521/files/final_fantasy_xiv_installer.pdf
    • https://cdn.shopify.com/s/files/1/0433/6916/9045/files/65712214873.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047d3.bin
ff4608c1f2a2f8b8768379bb690e75df7ac0589544dd5cc115f5adf0b6fd731c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47D3 5124 bytes
font_01_sfnt_off0000591e.bin
e0c0bbd68c6cd4ec27a9ac343921367e6604304e64bb1c42514a8feb83034abb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x591E 2716 bytes
font_02_sfnt_off00006516.bin
411c104204fc0127ec44a7cb155f09e9374f56d1ffd26f10f8fb29975b257a29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6516 9568 bytes
font_03_sfnt_off00008610.bin
35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8610 16036 bytes

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