Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6103a4ea4108220…

MALICIOUS

PDF

41.8 KB Created: 2020-09-16 18:39:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc677e56cb163fad42e6c0995866d590 SHA-1: f555533cdf322357b5dd32becc33c98853554408 SHA-256: f6103a4ea4108220349a1d387de92885e1e7c124f96b72193a2052e731ebed5f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.club/wix?keyword=en+espanol+2+workbook+answers'. Additionally, it exhibits a PDF link farm behavior, with numerous embedded URLs, many of which are hosted on file sharing services. The document body, though heavily obfuscated, contains the same suspicious URL. This suggests the primary intent is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=en+espanol+2+workbook+answers
    • http://jibepadil.caloriecorner.com/uploads/1/3/1/6/131637814/2759654.pdf
    • http://koduzaxon.ridgelanddiscountwineandspirits.com/uploads/1/3/1/4/131407572/dupozuverezanorerom.pdf
    • http://vovokaduw.pure-creativity.co.uk/uploads/1/3/0/7/130738623/4312733.pdf
    • https://8d393793-5737-4771-8eb9-29c075622d83.filesusr.com/ugd/65b209_66587d5e7dee4f5da652add3ced84a6e.pdf?index=true
    • https://0d42e548-63cb-4759-9ee3-96eee95e2d13.filesusr.com/ugd/685707_917f898761134acdb3ebf95f8c2a3dd2.pdf?index=true
    • https://61ad364c-d1e8-46eb-ab3f-aace8e6c70e9.filesusr.com/ugd/ee9d3f_57557b9e1f8546c5957969f9da422f64.pdf?index=true
    • https://9b935b5a-4e7a-4f91-982c-7131987d2874.filesusr.com/ugd/73c254_f7e412ef58af4717bc51bee191184d8c.pdf?index=true
    • https://957d20b3-b678-4f84-a9da-a7194cd585eb.filesusr.com/ugd/735189_a441e0dfdd774237ba9e38a83c0a1309.pdf?index=true
    • https://d925ee49-a3ce-4804-a531-70f38f3656bf.filesusr.com/ugd/f1780b_eb0f3ffe94e74e4ea8b8b95ee6e365a7.pdf?index=true
    • https://1d2224ff-40c3-47b1-be8f-668f8c882e84.filesusr.com/ugd/ee9d3f_2c14ddbc5db5459eae204df6c36e5ab9.pdf?index=true
    • https://5e53241b-1b6a-4b73-a917-ed2431a5ade3.filesusr.com/ugd/baef12_cf7cc6d144b0493bbaf24b9318dd7633.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0447/5705/7687/files/93406702372.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/66545528944.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005867.bin
27c41ae8810c2b634f4175702c2f8008c0bcae1ae795e6786b83e476a52c7b47
pdf-font-stream PDF embedded font (sfnt) at offset 0x5867 4856 bytes
font_01_sfnt_off000068f4.bin
ba29332b23a4c8ea568eeb06598f92188755d135057b97af1906d5c76923bd2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x68F4 10356 bytes
font_02_sfnt_off00008c68.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C68 4324 bytes