Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10908992c4ce6fe…

MALICIOUS

PDF

40.8 KB Created: 2020-08-23 05:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cda027a012688abacaa365e2d6e2d9c SHA-1: 364e4ce318019d6210473e0422ac0a0918554f55 SHA-256: c10908992c4ce6fe9244cbd7ca1b1fe7981b452ca9bdef15a84657be83ace49f
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO poisoning or to distribute malicious content. One of the embedded URLs, https://ttraff.com/pify?keyword=firepower+4000+datasheet, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure.

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=firepower+4000+datasheet
    • http://files.vickylneal.com/uploads/1/3/2/8/132815882/nemat.pdf
    • https://cdn.shopify.com/s/files/1/0441/1362/5240/files/free_inspection_report_format_in_word.pdf
    • https://cdn.shopify.com/s/files/1/0429/9037/0975/files/un_mundo_feliz_aldous_huxley_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/66080875711.pdf
    • https://cdn.shopify.com/s/files/1/0438/3955/3696/files/daxetekesararedejeni.pdf
    • https://cdn.shopify.com/s/files/1/0452/7508/7010/files/autobiography_of_a_yogi_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/vuwimatugexonut.pdf
    • https://cdn.shopify.com/s/files/1/0433/4383/9385/files/xunepaf.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_off000058ae.bin
abd635319c355ce4f530b2047af650d6d4bdd7dd20ac83cf704d5c82f47efc8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58AE 5292 bytes
font_01_sfnt_off00006ab6.bin
61a7a812cab5944d9e07a76b2eb21128af30a81cc3781ee07edfc3be580debea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB6 14252 bytes

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