Malicious PDF — malware analysis report

Static analysis result for SHA-256 8705a49ded5b112e…

MALICIOUS

PDF

114.2 KB Created: 2020-08-10 15:08:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc8bd78baeead66efd6fa200a14304cc SHA-1: fad371a9ea3eb4e8b3e8d484ae1f4119290d859a SHA-256: 8705a49ded5b112e6cb168174df1033867f8c709dda9c7a065372c07ee7ad7bf
150 Risk Score

Malware Insights

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

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 URLs. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to a phishing or malware distribution site.

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=epistemology+definition+philosophy+pdf
    • http://files.immanuellutheran-sterling.com/uploads/1/3/0/7/130739831/zerudonet-devuvefavi.pdf
    • http://fixoroka.thearmwrestlingarchives.com/uploads/1/3/1/6/131606490/5521170.pdf
    • http://files.themunrosofglenorrin.com/uploads/1/3/0/9/130969191/39483b7a6d7258f.pdf
    • https://cdn.shopify.com/s/files/1/0431/5470/2496/files/78274062884.pdf
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/zafomesudopukuwilipabogu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/koremijivarigurupapit.pdf
    • https://cdn.shopify.com/s/files/1/0438/4060/2269/files/apostila_sobre_administrao_pblica_para_concursos.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/mefudevogi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/fijokut.pdf
    • https://cdn.shopify.com/s/files/1/0434/7471/4790/files/savosovadimafazinum.pdf
    • https://cdn.shopify.com/s/files/1/0437/2935/4903/files/85253340645.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1016/files/cost_accounting_terms_and_definitions.pdf
    • https://cdn.shopify.com/s/files/1/0430/5630/0186/files/neworusupapevusoxuzogoxik.pdf
    • https://cdn.shopify.com/s/files/1/0436/7699/1653/files/13719407379.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/fapumivo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4135/6950/files/darigawotowifodaxaruvi.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_off00017ee9.bin
d32ed2c417b624f0a3ae8c4f9179e0d1dae39ad9ec5e15c0cf42a9eb01c9232b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17EE9 5208 bytes
font_01_sfnt_off0001908c.bin
aa1e2b6c30ce38c654e730de6735cf64510f4cae11b6116dbf4f0dbc9db6c9ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1908C 12780 bytes

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