Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b3dd6f775b1a5e2…

MALICIOUS

PDF

80.6 KB Created: 2020-08-06 13:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7235084e93bde905173be53305762885 SHA-1: f4ddc4e61cbd1be4a321b285ba190e43ba429131 SHA-256: 3b3dd6f775b1a5e2a73f2b1fd13785eb8523bf426a8a8665521aec76de2870fc
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'acids and bases with formulas pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link 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/pify?keyword=list+of+acids+and+bases+with+formulas+pdf
    • http://files.mariettaoddfellows.org/uploads/1/3/0/9/130969561/07e0f0cbe189.pdf
    • http://nisufu.sscimp.com/uploads/1/3/1/1/131164239/fepepameboja_fesiliwop.pdf
    • http://suxaf.fixmyflatpack.net/uploads/1/3/1/6/131606875/putitutesibegeso.pdf
    • http://zifijami.rhynotite.com/uploads/1/3/1/8/131871864/1242304.pdf
    • http://files.heislercommunications.com/uploads/1/3/1/4/131406478/sosugibatovuso.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vevisip.pdf
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/34148238600.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/nuzumufosexiwasus.pdf
    • https://cdn.shopify.com/s/files/1/0439/3956/1630/files/jazewosevozopugojuri.pdf
    • https://cdn.shopify.com/s/files/1/0433/8899/3699/files/wojepukamajig.pdf
    • https://cdn.shopify.com/s/files/1/0436/0765/4563/files/56208046298.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97242885008.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/18869602451.pdf
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/sosefukixepax.pdf
    • https://cdn.shopify.com/s/files/1/0433/3040/4502/files/30925930657.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1922/9591/files/java_remove_element_from_array.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97072231683.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e092.bin
785e14edb041b9b14f332ee6ab54af25e3a70fcb40c86808225cff5dfa8c39f8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE092 5568 bytes
font_01_sfnt_off0000f367.bin
0b54ac84196e7973a75ccade8527e77454eef3a44b6d34358fc15529a5b659f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xF367 14016 bytes
font_02_sfnt_off00011fc5.bin
d82d87826c3064c03a306f79bf7d04151e9ee92f23bd1ad67cae8d9f5ad36d9b
pdf-font-stream PDF embedded font (sfnt) at offset 0x11FC5 16116 bytes