Malicious PDF — malware analysis report

Static analysis result for SHA-256 d98d74db2398a92c…

MALICIOUS

PDF

51.5 KB Created: 2020-07-18 04:14:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5167051292ada63715ad39f5fd0e1f5d SHA-1: c90d6f0c138d9348099b652ab7b45a98685cf7ae SHA-256: d98d74db2398a92c0d0ae25c56a92c1d7439da9d6bcab934ecffa73acfcdfb89
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, many of which are designed to mimic SEO-friendly book titles, leading to a link farm. One of the primary links redirects to a known malicious domain, ttraff.com, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains metadata related to PDF generation and a keyword that aligns with the embedded links, reinforcing the 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/wb?keyword=op%20tandon%20physical%20chemistry%20pdf%20quora
    • http://files.whhstdc.com/uploads/1/3/0/9/130969446/gisatavonolubebabe.pdf
    • http://files.waydragon.com/uploads/1/3/2/6/132681625/1674929.pdf
    • http://files.bboybgirllifestyle.com/uploads/1/3/0/9/130969408/497358.pdf
    • http://files.willowcreekfarmsva.com/uploads/1/3/0/7/130775016/zizugoxude.pdf
    • http://files.angelaokeefe.com/uploads/1/3/0/7/130774990/nemofemi_gamupokuwatup_zunoxarabi.pdf
    • http://files.arinsberg.com/uploads/1/3/0/8/130874213/977aed4002d4.pdf
    • http://files.sgkey.com/uploads/1/3/2/7/132741128/matuto.pdf
    • http://files.theosleadershipnetwork.org/uploads/1/3/1/4/131410158/donijakagatajusixob.pdf
    • http://files.sgfbeef.com/uploads/1/3/0/8/130814066/tadukik.pdf
    • http://files.theosleadershipnetwork.org/uploads/1/3/1/4/1
    • https://tawufas436705345.files.wordpress.com/2020/06/gulegiwomuwe.pdf
    • https://povaduw.files.wordpress.com/2020/06/sivekup.pdf
    • https://vajowobago.files.wordpress.com/2020/07/3428923328.pdf
    • https://rogafoxozi.files.wordpress.com/2020/07/webofimiwagepisuwapot.pdf
    • https://zabalime270743903.files.wordpress.com/2020/07/sirimibivasimegurodegol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63529720688.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/87576091382.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2858/files/70182793936.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/85435629373.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/magovapali.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/basugogigarerebid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99914628395.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_off000089e8.bin
a394eba92a81091d7d44091eee8f4e0f645b1d31e2c135be2f04ea8be6e53c8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x89E8 5532 bytes
font_01_sfnt_off00009c80.bin
52d9148159d95e8f85d5f5d88b7e67f9ea0c6456e3d7c9f481e3394f2f52d35f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C80 10476 bytes