Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e007ee30f05aa33…

MALICIOUS

PDF

52.6 KB Created: 2020-08-05 03:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 160aa8eeff495c37b687ee8d02425eb0 SHA-1: 1cac4dff5d7348d95dc61f85fedca92aa2d8321c SHA-256: 1e007ee30f05aa33f4dbf42ce5ce6cc4c2aabc35c5b4956e0c4afcd8d8f59c42
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a lure suggesting it is a syllabus, but it embeds numerous links, including one to a known malicious redirector at ttraff.com. The heuristic firings indicate this is a malicious redirector and a link farm designed to trick users into downloading further content. The document body itself is heavily obfuscated but contains the malicious URL, reinforcing the social engineering attempt to install a browser extension or viewer.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/pify?keyword=cds+syllabus+pdf+for+ota
    • http://files.eastsidehighwaydistrict.com/uploads/1/3/1/4/131438667/jogowe_resiwidi.pdf
    • http://files.hiltonheadislandinvitational.com/uploads/1/3/1/6/131637150/benepoxisu.pdf
    • http://files.nancyjanefarnum.ca/uploads/1/3/0/8/130814529/wuzanobibexeso_sotunekag_vuwebed_guvaxamewivusub.pdf
    • http://files.jarodhector.com/uploads/1/3/2/6/132682878/2923e1.pdf
    • https://cdn.shopify.com/s/files/1/0430/0495/2735/files/75798768891.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/69413416236.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/insatiable_tinkers_construct.pdf
    • https://cdn.shopify.com/s/files/1/0431/3818/7413/files/19043180485.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/31677238011.pdf
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/forgotten_shore_map_piece.pdf
    • https://cdn.shopify.com/s/files/1/0437/2725/7749/files/somopuwazulisa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/kasovufiwokimezexe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7596/8928/files/zozum.pdf
    • https://cdn.shopify.com/s/files/1/0432/3078/9800/files/active_causative_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/2994/4730/files/historias_cortas_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/pigiredekonesalijapagawej.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/gikafonusubono.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/koleguwebazamimadaxopul.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_off00008581.bin
f636a90b381fac08552302211b38cf63f5e7808dc33c787ed38f990a59b78777
pdf-font-stream PDF embedded font (sfnt) at offset 0x8581 5184 bytes
font_01_sfnt_off0000972a.bin
833596bcb91d61b5383fed31ce350887fcd53dd28916fbb2172454149e138449
pdf-font-stream PDF embedded font (sfnt) at offset 0x972A 14824 bytes