Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e36e4588ecdf892…

MALICIOUS

PDF

43.7 KB Created: 2020-08-14 01:17:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffb123f7d33c8914e95356372befedc0 SHA-1: 6614bbd4b57d2d80d38573c9a7baccf7e240f452 SHA-256: 1e36e4588ecdf892ea87edec02cd6e4395ecef38a36fea770f991d15b1b99eb0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/wb?keyword=similarities%20between%20tort%20and%20contract%20pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to lure the user to malicious sites.

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/wb?keyword=similarities%20between%20tort%20and%20contract%20pdf
    • http://files.nborm.com/uploads/1/3/2/7/132740214/bisabodolujisiw_wononepebijit_xogudogo_xanube.pdf
    • http://files.actuarialplaybook.com/uploads/1/3/0/7/130738607/mexelaja-jirosu-xenujufanima-mutegaj.pdf
    • http://files.pattibounds.com/uploads/1/3/1/0/131071082/lumava.pdf
    • http://bofikidu.necementshippers.com/uploads/1/3/2/3/132303382/xozofitu-xufavajeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/value_of_books_essay.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1731/files/mumibetolemiba.pdf
    • https://cdn.shopify.com/s/files/1/0435/7944/1307/files/xojakuzemas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botezosural.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/administrao_de_micro_e_pequenas_empresas.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/diwapagapozojo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/factory_unlock_sprint_iphone_5.pdf
    • https://cdn.shopify.com/s/files/1/0431/1298/8821/files/13906204597.pdf
    • https://cdn.shopify.com/s/files/1/0434/5266/1912/files/dclaration_de_cession_de_vhicule_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0432/7283/1134/files/pafadotufoxirisik.pdf
    • https://cdn.shopify.com/s/files/1/0436/2518/5442/files/abp_news_bengali.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_off00005f28.bin
e8663b4c415cb5fc5737af0d283ad07d50bac4dd01bce3d1b12a67a5c3789004
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F28 5424 bytes
font_01_sfnt_off00007177.bin
9344a5e82315c80be3b05768ca592edcbe7187b42c3a36f509ad38e4f07d94ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x7177 10212 bytes
font_02_sfnt_off0000938f.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x938F 4324 bytes