Malicious PDF — malware analysis report

Static analysis result for SHA-256 51b8e31b8cc6de90…

MALICIOUS

PDF

76.8 KB Created: 2020-08-18 18:18:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ab629ad9e33fd1365d388f6a8176c67 SHA-1: 5a1382ba3c14e6b46bb4e421f99ddf8692b028db SHA-256: 51b8e31b8cc6de90380e952be1010c29162c30e627b9fba39dc5cc90270d4ef9
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used in SEO link farms to artificially boost search engine rankings or distribute malicious content. One of the primary links directs to a known malicious redirector, 'ttraff.com', which is disguised as a game guide. This indicates a social engineering attempt to lead users to potentially harmful sites.

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=destiny+child+reroll+guide+ios
    • http://files.deerbrushdesign.com/uploads/1/3/1/4/131453432/kamugilikikavuxoje.pdf
    • http://nisugosam.skycruizair.com/uploads/1/3/0/8/130814933/saveg-vibupojawijomu-sasil-xivupo.pdf
    • http://files.anniesatticonline.com/uploads/1/3/2/6/132695719/sofolosefupaju-wafuvinowarat.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/degotumikotimimena.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1054/files/lugoteji.pdf
    • https://cdn.shopify.com/s/files/1/0439/1796/7528/files/9720572591.pdf
    • https://cdn.shopify.com/s/files/1/0431/0374/8260/files/ximasedulexibe.pdf
    • https://cdn.shopify.com/s/files/1/0451/1966/8377/files/archery_king_mod_apk_game.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/1879537449.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8065/files/pawuxodufusidobumulu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/pofolifotojetubovoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/denemipanodubelubo.pdf
    • https://cdn.shopify.com/s/files/1/0438/9991/2344/files/lake_ontario_salmon_report_2018.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/
    • https://cdn.shopify.com/s/files/1/0433/6690/8065/files/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db98.bin
f51bac33d555410e30e3eb07288acea2eab1b2a6c6af22f3635d546f70a91394		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB98 5092 bytes
font_01_sfnt_off0000ece8.bin
e4d570969ab6d8f94648546471d356f99661a7ba55b7eb9cc102e29979d518ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECE8 10592 bytes
font_02_sfnt_off00011142.bin
2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11142 16092 bytes

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