Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f54bafd3e94c7e4…

MALICIOUS

PDF

39.2 KB Created: 2020-08-18 22:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65866ec5f873bb5c89b7133192118899 SHA-1: 6f4cb2f2ca33955e8dba62320194ecc37b659295 SHA-256: 4f54bafd3e94c7e4119aea6c44450566373b6aa6b5baf4c575ef993a538d032a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is designed to lead users to harmful content. The document body, though partially corrupted, contains the same redirector URL and other URLs pointing to Shopify, likely as a lure.

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=biography+or+autobiography+worksheets
    • http://files.kenmeyerjr.com/uploads/1/3/0/8/130874110/zimixori_gegadimogepufo_mebopopuwaje_rodosefo.pdf
    • http://punesep.adrienneghaly.com/uploads/1/3/0/7/130739561/ca73345d8980c.pdf
    • http://files.knightdalehsband.com/uploads/1/3/2/6/132681517/fewijogupe.pdf
    • http://files.bitoblissfarm.com/uploads/1/3/0/8/130874039/7840312.pdf
    • https://cdn.shopify.com/s/files/1/0430/1094/9273/files/causes_of_autism_spectrum_disorder.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1298/files/cell_culture_media_market.pdf
    • https://cdn.shopify.com/s/files/1/0430/6337/8081/files/64627702712.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/zitabijisaderodud.pdf
    • https://cdn.shopify.com/s/files/1/0430/6599/9511/files/flac_to_alac.pdf
    • https://cdn.shopify.com/s/files/1/0447/9896/7974/files/biased_news_reporting.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/nuvalire.pdf
    • https://cdn.shopify.com/s/files/1/0433/9594/0503/files/3009271090.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2191/files/how_to_delete_emails_in_bulk.pdf
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/andhra_pradesh_history_in_telugu_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdf
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/itaste_vv_manual.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_off000059b5.bin
f9bc1ffdc724f8775340f6acaa829074623d970ab7ecefc85b55e3646bc33283		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B5 5496 bytes
font_01_sfnt_off00006c77.bin
5cb375a15faad5dde2016e27b7209d38d4bc385a6691a918e01c673d78776786		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C77 10404 bytes

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