Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf19654dfc26783…

MALICIOUS

PDF

41.7 KB Created: 2020-08-20 08:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 761e64cde86bc748e73ca85b257b9de4 SHA-1: 11fcc9fe332971b6aee5d3492294c4f89d4e4af7 SHA-256: ecf19654dfc267834fc27a48351845de0da73e0b8801d903a3d1f83a69b439b8
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, a technique often used for SEO poisoning or to direct users to malicious sites. One critical heuristic identified a link to a known malicious redirector, traff.cc, which is likely intended to lead the user to a further malicious payload. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic.

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.cc/pify?keyword=oceans+and+seas+of+the+world+pdf
    • http://narurut.bbkart.com/uploads/1/3/0/8/130874064/vekaluxefelej_pusod_vijapobi.pdf
    • http://tisobeta.sp-arms.com/uploads/1/3/1/0/131069839/49daa1c.pdf
    • http://files.esteemvocals.com/uploads/1/3/0/7/130775135/bb84cd1978f8be.pdf
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/386383019.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/sixoluzunuzerixozawamem.pdf
    • https://cdn.shopify.com/s/files/1/0439/9611/9198/files/zonarijotebor.pdf
    • https://cdn.shopify.com/s/files/1/0438/9660/2779/files/40115154493.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/bartered_bride.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/tasosisubulogatuvi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/gebobovufesawurokewum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/65768705296.pdf
    • https://cdn.shopify.com/s/files/1/0437/9544/7970/files/rational_fasting_challenge_hulse.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_off000064bd.bin
4e868bd88b889541e54c9bc9325d3fea63cfa0b4f5366049f704785e12eb9e3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64BD 5364 bytes
font_01_sfnt_off000076fa.bin
8d1b1649fe0e0858ab76d423a9e6408caf9741bd94ad3f7ab6e0e3683ac1d1e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76FA 10332 bytes

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