Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe1854a8b4a247b6…

MALICIOUS

PDF

41.2 KB Created: 2020-08-24 01:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95e483e62afe98c740396b15d3223856 SHA-1: 1aa36cfc042b6be6d955f9f53478dcaf6dfc82cc SHA-256: fe1854a8b4a247b6010e4ac578d5f6b2d2be46b0e0edddf7f59d8a0e64398051
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and references a 'hearthstone arena guide icy veins', suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting the user to a potentially malicious site.

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=hearthstone+arena+guide+icy+veins
    • http://files.hydeparksuzuki.org/uploads/1/3/0/8/130814052/sifalogi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/mamaxefovumapijuremi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/58555456417.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/77494030339.pdf
    • https://cdn.shopify.com/s/files/1/0440/8911/4789/files/geometric_optics_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/7183/1193/files/four_five_seconds_karaoke.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/45123605864.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/wulavarutubonopof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9059/2422/files/blue_line_pittsburgh.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/15065877718.pdf
    • https://cdn.shopify.com/s/files/1/0440/0329/5382/files/incremental_backup_script_in_bash.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/xexazivotalezikuwezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/bukujibipegikabetav.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4379/files/vavog.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_off00006456.bin
b64dd35f00fcbac0c83d37514c15681819f09b4f02306de675efb358602c0211		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6456 5292 bytes
font_01_sfnt_off00007652.bin
4c96f3c0cd293fa5564e5cfa6127650a6401ba76b7c5ac07f41a74ab74da7774		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7652 9896 bytes

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