Malicious PDF — malware analysis report

Static analysis result for SHA-256 497417a6ea436b64…

MALICIOUS

PDF

33.1 KB Created: 2020-08-23 14:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5af6ed60c9d2da8c58cf6acd3cb8b91e SHA-1: 433ebdfdb4fa93e1185b9f203368e68be13cd67d SHA-256: 497417a6ea436b648a034353d22633d62ce4c605780c25ef5e40c099a7741b1d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, suggesting the intent is to redirect the user to a malicious site. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the malicious nature of the primary URL.

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=airline+pilot+uniform+halloween
    • http://rovoxelig.splashsteamboat.org/uploads/1/3/1/4/131453526/fipesoja.pdf
    • https://cdn.shopify.com/s/files/1/0428/1915/8183/files/44261657688.pdf
    • https://cdn.shopify.com/s/files/1/0436/7928/5401/files/koxobomuba.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/64951754105.pdf
    • https://cdn.shopify.com/s/files/1/0450/1274/6390/files/varigu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/wisokomepimisemin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdf
    • https://cdn.shopify.com/s/files/1/0451/8608/9109/files/integers_addition_and_subtraction_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/rorakitopulixa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/vibobowujizasidisapimizem.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/zeruwi.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_off0000475b.bin
37188ff94251faa4e57309a86def3c4b507aaaa7468f7d091b9b627e083c399b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x475B 5044 bytes
font_01_sfnt_off00005860.bin
5e95c5d71cdd30d4701bf44da012496b5bb5c2674cafedafa1a88005658527ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5860 9276 bytes

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