Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa8308516a6710c…

MALICIOUS

PDF

39.8 KB Created: 2020-08-15 06:27:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8577b1414fdbf23e8f3f762683659be SHA-1: 9e9020cc453db3527e74a783902293a75bd5460b SHA-256: eaa8308516a6710c9386a4bbec19cb982def27ce4553fd25e6b83690ddc55ae7
150 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'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to shopify.com domains. The document body, though heavily obfuscated, contains the same redirect URL. This suggests the primary purpose is to lure the user to click the malicious link, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=complementary+colour+wheel+template
    • http://files.tang-xun.com/uploads/1/3/0/8/130874148/2929650.pdf
    • http://jefasozi.inkwashed.com/uploads/1/3/1/4/131482916/9169983.pdf
    • http://files.authortomanthony.com/uploads/1/3/1/0/131070313/sagil-madakimem.pdf
    • http://files.siberian-cat-yard-house.com/uploads/1/3/1/4/131483337/kavuf_kodivipuvaxoli_kufodimisad_telimer.pdf
    • http://files.torrancerosefloat.org/uploads/1/3/2/3/132302718/4076987.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/dejafarul.pdf
    • https://cdn.shopify.com/s/files/1/0433/3004/4062/files/123919249.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6023/files/97049803846.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lajuvifubukakevo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9403/9975/files/elementary_analysis_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0957/files/tesis_sobre_aprendizaje_significativo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2692/files/xetiduxuniwejop.pdf
    • https://cdn.shopify.com/s/files/1/0434/6308/2146/files/o_livro_dos_espiritos_allan_kardec_download.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_off00005f33.bin
11b867c9aa2610028c1e702c5ca77147c6b394a1268a7cbc80954166b66e8df8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F33 5096 bytes
font_01_sfnt_off00007066.bin
962850678935195c42ea8bce7bc50840c2fc6566f4ccfe78d1673a45ae3c7dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7066 9996 bytes

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