Malicious PDF — malware analysis report

Static analysis result for SHA-256 3241db0b179dc8da…

MALICIOUS

PDF

46.0 KB Created: 2020-08-20 10:44:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 827a93b68dec89e18f8c3bfc3ac02881 SHA-1: 6a44c569bd0fa5df546801eb26726263c4a864a0 SHA-256: 3241db0b179dc8dab149f52ab2a01407e875a19da7bded4f987f43827b934c5e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Samsung android phone' and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to improve search engine ranking for malicious lures.

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.com/pify?keyword=samsung+android+phone+upto+5000
    • http://rogowupi.corevirtues.net/uploads/1/3/2/6/132682883/a42cb.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/safajur.pdf
    • https://cdn.shopify.com/s/files/1/0437/7162/5621/files/cristianismo_puro_e_simples_baixar.pdf
    • https://cdn.shopify.com/s/files/1/0437/5301/3409/files/android_one_phones_coming_soon.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/39271964120.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/kinesa.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/cant_stop_wont_stop_movie.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/mimuzamufanobexeg.pdf
    • https://cdn.shopify.com/s/files/1/0438/1389/6352/files/o_capitalismo_para_principiantes.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/macroeconomics_20th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7818/files/94826611151.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_off0000746b.bin
178f27130012af9aa6f0b0f0a384daab3fca20e56dc5f9a928dac9a782de8601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x746B 5712 bytes
font_01_sfnt_off000087aa.bin
a1c2b780a48653175b341cf1ca0ef7629fc163181d6465335c512e29d889852c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87AA 10580 bytes

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