Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae247e4eb83dd772…

MALICIOUS

PDF

37.4 KB Created: 2020-09-16 17:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f0ceb33dd4f114c97810365572d58ae SHA-1: dff4bbbf58f2fa9f4582d11216b5e6b7315f5331 SHA-256: ae247e4eb83dd772f3ade8bae9da3ddac5fd71eb3a5d3528b611aabe29c3aff9
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign content, but one critical link directs to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the string 'Endless night sheet music pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of numerous links, including the malicious one, indicates a likely attempt to distribute malware or conduct phishing by redirecting the user to a compromised site.

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.link/wix?keyword=endless+night+sheet+music+pdf
    • http://tigisoja.stadiumcatering.com/uploads/1/3/0/7/130738902/rovafiwa-dalakomimusi-wisiligaga.pdf
    • http://patimanut.vision117.com/uploads/1/3/1/3/131380177/6999599.pdf
    • http://majoxeji.saramakesart.com/uploads/1/3/1/4/131438684/womutakope_kifezo_demozor.pdf
    • http://files.kitosbiotech.org/uploads/1/3/0/7/130775249/3f12cb34f70da5.pdf
    • https://601fbd12-125a-4dda-878b-9fa89468a4a3.filesusr.com/ugd/d2759c_d80e2dd3cd4e47d8a495668d85f4b3ff.pdf?index=true
    • https://fef10a84-4a4d-4971-830a-c214889cad38.filesusr.com/ugd/6f9b04_f2f11ba3f4264dc1bad33fb7ed053ced.pdf?index=true
    • https://c08e774b-3623-4ea8-a8e4-838516188dd7.filesusr.com/ugd/18122d_4faf550137d049bc86d9a3c3f88c771c.pdf?index=true
    • https://a1762a50-146f-4696-a126-e32ee8d89274.filesusr.com/ugd/370021_2520ba0c64d547a59a2fc0c5c34c6df4.pdf?index=true
    • https://ff2157e6-9eac-4192-8d44-8c9826740088.filesusr.com/ugd/eaf48f_4c25538574e4411eb03e489d507fd630.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/1185/8855/files/tejusow.pdf
    • https://cdn.shopify.com/s/files/1/0433/7690/2309/files/gamejufabiguborosewutatif.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/boker_knives_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/autonics_tc4s_manual_en_espaol.pdf
    • https://e0417292-3e14-41e7-b614-2aa3b996ebaf.filesusr.com/ugd/76de1a_c05edc7c39f44ddea026cae667e45fa3.pdf?index=true
    • https://43c83fb5-2a5e-4a77-924f-607b3cc01b67.filesusr.com/ugd/7d1dc9_2a7989266c9e41c8a861c107c2ca209f.pdf?index=true
    • https://06dabcff-d936-480e-984b-155ddaa57349.filesusr.com/ugd/9cfd0a_e6455b2ed10e4918a6a398b4a1ac0018.pdf?index=true
    • https://8883ac51-e3a5-4e30-a4f6-c0e332294fff.filesusr.com/ugd/3e7897_de6243389ae0459b91f56de29ee9189f.pdf?index=true
    • https://cc403e61-5695-44a3-bb3d-60a0abad07f7.filesusr.com/ugd/405339_4887db3218f34b298fe4714254e90e59.pdf?index=true
    • 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/
    • https://8883ac51-e3a5-4e30-a4f6-c0e332294fff.filesusr.com/ugd/3e7897_de6243389ae0459b91f56d

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005330.bin
207d6e7990fb4b368618c4c554d63876ea79ceeec621635f7a6749b894d81986		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5330 5220 bytes
font_01_sfnt_off000064dd.bin
e01ee26f73bbbe3ae477b22d1f4671139d2f8f9094e637a262761237ba5093e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64DD 10612 bytes

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