Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec34b2626e1d48f0…

MALICIOUS

PDF

41.6 KB Created: 2020-07-14 04:17:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f7d37c2520223caec0eaf24a419d381 SHA-1: 9288af38fce0ab5174c7893116be7e8764cbe5e5 SHA-256: ec34b2626e1d48f0958d2a67766c6432fa773595876d00cf582cd7f606504710
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, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure, specifically 'ttraff.cc'. This suggests the primary purpose is to redirect users to malicious content, potentially for phishing or malware distribution. No scripts were extracted from this sample.

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/wb?keyword=grasp%20of%20the%20emerald%20claw%20pdf
    • http://files.4-ucorp.com/uploads/1/3/0/7/130739567/7385382.pdf
    • http://files.hopeutc.org/uploads/1/3/1/6/131606284/6feae58c.pdf
    • http://files.craigdeebank.com/uploads/1/3/0/7/130775342/mamubejuvaxifodolur.pdf
    • https://gijubuwat
    • https://kiburowunexa.files.wordpress.com/2020/06/fomovu.pdf
    • https://walumuvov.files.wordpress.com/2020/06/21554079064.pdf
    • https://wazakifi.files.wordpress.com/2020/07/61605403311.pdf
    • https://lubaxop.files.wordpress.com/2020/06/97200782022.pdf
    • https://zesefekir.files.wordpress.com/2020/07/tenifav.pdf
    • https://fivenokija.files.wordpress.com/2020/07/76513221890.pdf
    • https://gijubuwat.files.wordpress.com/2020/07/xipuwumufiwekox.pdf
    • https://volapuzigu.files.wordpress.com/2020/07/fudedorijezox.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/77443789143.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/28308832457.pdf
    • https://cdn.shopify.com/s/files/1/0433/7208/5406/files/99807526912.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/70388285084.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zamujogeve.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75877947267.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_off0000626b.bin
38dd381c995ccb70bfbef11f13124cbbac2e3a894169614edda8d0ba940fa7df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x626B 5152 bytes
font_01_sfnt_off0000740d.bin
8a21c2c98d8fc6fc1ed080b01a6bb8e14244cee685357ce2a9292b00bac9055e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740D 10316 bytes

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