Malicious PDF — malware analysis report

Static analysis result for SHA-256 e856ea23c46cfa02…

MALICIOUS

PDF

34.0 KB Created: 2020-08-20 23:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 439c3adba39e8c32b73cad651417ef9a SHA-1: dd7f8eb3a65647b847ff0237fad9956ce6bcb844 SHA-256: e856ea23c46cfa02126105b198517300ec051466c0aadc69a0c38a39925c499e
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. This suggests a link farm or SEO poisoning attack designed to drive traffic to malicious destinations. The document body itself is largely unreadable binary data, but the presence of the malicious redirector URL and the link farm heuristic strongly indicate a malicious intent to redirect users.

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=giresun+weather+report
    • http://files.infantmassagenewzealand.org/uploads/1/3/0/7/130738741/xotarelagaxes_mamupuzuda_lajosulufujiz.pdf
    • http://files.primarypd.com/uploads/1/3/1/3/131379530/01657abfb04.pdf
    • https://cdn.shopify.com/s/files/1/0448/1817/0018/files/zasawu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5586/5243/files/buku_amdal.pdf
    • https://cdn.shopify.com/s/files/1/0431/9772/6880/files/autosketch_program_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/dotoroniz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9020/5090/files/xadujuvosuvebuloruxek.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/agenda_docente_2020_gratis_argentina.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9618/files/22750695796.pdf
    • https://cdn.shopify.com/s/files/1/0430/3696/7063/files/47595948190.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/xijixawonosanukufo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0316/files/pdf_to_word_converter_online_small.pdf
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/90648642623.pdf
    • https://cdn.shopify.com/s/files/1/0433/7179/0494/files/becker_cpa_review.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_off0000493c.bin
600deba4a543f6a15f8a8165f0af6bf267655e750693ff0f7454f8fb299aff2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x493C 5000 bytes
font_01_sfnt_off00005a48.bin
27c102b8f6468b9f5c6cf2f037bff6f42e1bbac374ecfb940c78c21e48558852		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A48 9656 bytes

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