Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2f081b6aeaa130…

MALICIOUS

PDF

56.1 KB Created: 2020-08-15 17:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74d152197a40210e40127ffa882aac59 SHA-1: 03d1f9ed471f58835d8615d17bcd4b0d04c51009 SHA-256: fc2f081b6aeaa130cde164c8bce746ee31285997f9d957a7ae340926b2a7f94d
120 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is part of a link farm designed to appear as a search result for 'asoiaf books pdf download'. This suggests a social engineering tactic to trick users into downloading files from potentially untrusted sources. The presence of numerous links, many pointing to Shopify domains hosting PDF files, indicates an attempt to create a large, seemingly legitimate collection of downloadable content, likely to mask malicious activity.

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/wb?keyword=asoiaf%20books%20pdf%20download
    • http://files.hmctoronto.com/uploads/1/3/2/6/132695575/2348655.pdf
    • http://nadofe.ginninderrajcc.com.au/uploads/1/3/1/8/131856979/vuzew.pdf
    • http://files.utspta.org/uploads/1/3/1/6/131636852/togubixi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/5355376297.pdf
    • https://cdn.shopify.com/s/files/1/0432/3934/2247/files/oxford_discover_5_workbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0444/4625/3222/files/java_book_filetype.pdf
    • https://cdn.shopify.com/s/files/1/0437/8099/7269/files/zegagejoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/7270/6977/files/natodejunonaludatu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4914/0902/files/rogoxaribariwifumigu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/tamudemamumatabogatud.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/lord_of_the_rings_novels.pdf
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/dasidakavaxexi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2802/8312/files/cultural_anthropology_syllabus.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007dc9.bin
c7a428f373ad4661ee866c9463943f3b055bd295d58816a7cf379cebbbf83ed9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC9 4500 bytes
font_01_sfnt_off00008d88.bin
ad2fdf93d752c0d026f0a3e8a9d9645b6b11cab7b643c52e20563623fb6f639f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D88 5224 bytes
font_02_sfnt_off00009f77.bin
d1e3c0dd7855f222e8bfe980cdede12b8dae93cadedd4e04fedfb978ddf0186d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F77 11492 bytes
font_03_sfnt_off0000c5e0.bin
42b02428c5581f838ddfb43f2d40f30e17102d920296a56dd568daa7cebcb1f4
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5E0 3364 bytes