Malicious PDF — malware analysis report

Static analysis result for SHA-256 e194fb2ffb56a77a…

MALICIOUS

PDF

42.7 KB Created: 2020-09-02 02:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c1a7653ecfd757ad4dab1e049c8464b SHA-1: a6f26a8d058df3cab8dd5d9b4586693a7dd18b88 SHA-256: e194fb2ffb56a77a22cc14130cdd37681993db7840a8bd2cd11d996dd39f9747
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'restricted reporting order employment tribunal' and the malicious URL. This suggests a phishing or social engineering attack aiming to direct users to malicious infrastructure.

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/wix?keyword=restricted+reporting+order+employment+tribunal
    • https://cdn.shopify.com/s/files/1/0435/7606/6207/files/kosatemenexuferibevew.pdf
    • https://cdn.shopify.com/s/files/1/0439/3828/3678/files/lemejodekidatugesinowol.pdf
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/jiluxefa.pdf
    • https://cdn.shopify.com/s/files/1/0435/6803/8047/files/art_fundamentals_theory_and_practice.pdf
    • https://static.usrfiles.com/ugd/fe0276_ddbe14a3f0464d3fb01b10d3727aa6b1.pdf
    • https://static.usrfiles.com/ugd/73cb9e_80d1ff5d08b248268ac4f6d6573022f7.pdf
    • https://static.usrfiles.com/ugd/a4d998_9dfeae2a9f3b45ecae01afce414d3b92.pdf
    • https://static.usrfiles.com/ugd/7dfe85_07ed0583f23548f2b00f37062c1ed5a3.pdf
    • https://static.usrfiles.com/ugd/865d50_e3ad907400504cfdbf1d17c5d5636585.pdf
    • https://static.usrfiles.com/ugd/f6a907_807c49759eb84e27a7fea220cc3230c9.pdf
    • https://static.usrfiles.com/ugd/e7e4a0_e13325c0d2354fb2b94ad89ea42467ab.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_effd47c1a22c41c9be1772bb7487e33e.pdf
    • https://static.usrfiles.com/ugd/b8c837_31ae5b9fda44486e9c06b3ae4c9525ad.pdf
    • https://static.usrfiles.com/ugd/b4f0c6_dd1c46438a6a4af2ba97a0f2dd7384f6.pdf
    • https://static.usrfiles.com/ugd/930050_dbd46871163446cb95ed7db02f3e94d8.pdf
    • https://static.usrfiles.com/ugd/9cc572_2d680eee55b44b84ba502f88c7866319.pdf
    • https://static.usrfiles.com/ugd/b444d4_40a2eaf2656f4b0eb558a2eb64151e5c.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_off00006783.bin
a6c4e848717400129b1927b59d7f86b3eac7c2863208cc9b58560f99bab23a64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6783 5640 bytes
font_01_sfnt_off00007aab.bin
a1e716eb96f4a5dd95ea17cd99636fcc97fb5dbd458e56986c0f62bd700ed948		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAB 10228 bytes

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