Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e1b4b970175bf8f…

MALICIOUS

PDF

53.2 KB Created: 2020-09-01 01:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5656557cb52f64d3d38da2b491236fa8 SHA-1: 36929f31c33254d6d6e4c21d62269998efd2bb9d SHA-256: 2e1b4b970175bf8fa5a4c1e138b00e599c29b2c1f40d3827f3bba44ba2f1119c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=collections+in+java+8+pdf'. This indicates a phishing or scam attempt, using the guise of a technical document to trick users into clicking the malicious link. The file also contains a large number of external PDF links, many hosted on shopify.com, which is characteristic of a link farm used for SEO poisoning or to obscure the final malicious destination.

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/wix?keyword=collections+in+java+8+pdf
    • https://cdn.shopify.com/s/files/1/0439/0469/6472/files/mamapapuwiniripo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1672/4386/files/49161635128.pdf
    • https://cdn.shopify.com/s/files/1/0435/3464/7445/files/86125766584.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/samifivefesopipewufuv.pdf
    • https://cdn.shopify.com/s/files/1/0438/6252/4069/files/set_active_worksheet_vba.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/42222842500.pdf
    • https://cdn.shopify.com/s/files/1/0436/0152/6948/files/calendario_2020_con_dias_festivos_oficiales_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/ximijavukurejowejow.pdf
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/gevalizorasowamaposakirum.pdf
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/ravefifema.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/abraham_maslow_motivation_theory.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/62494397869.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_off000089da.bin
8488621cfbfca8f7e52bffe5178f5fe5f18bbe51e7db05b8aedac471e02141ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89DA 5288 bytes
font_01_sfnt_off00009bf8.bin
035b4e6ee0fa90f3429060b6e242b7a1a462beb1f7ccc42d8bebf694cd5ada97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF8 14036 bytes

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