Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2375aec22211aa0…

MALICIOUS

PDF

46.6 KB Created: 2020-07-27 20:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: feb35959667e8b2bece9e7777ded1f7d SHA-1: 7726d559b3b09f04df56d809e1539e23ee98a73f SHA-256: e2375aec22211aa00cb193614cb1531951b4f8906568cc017bcee8a16aa6a7ad
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.cc/pify?keyword=java+jdk+6++mac', is identified as a malicious redirector. This suggests the document's purpose is to direct users to malicious infrastructure, likely for further exploitation or credential harvesting. The presence of a link farm indicates a potential SEO poisoning or spamming campaign.

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.cc/pify?keyword=java+jdk+6++mac
    • http://files.castlecomplexcafe.com/uploads/1/3/0/8/130814070/nunenedor-medux-febivonap-felodofizude.pdf
    • http://files.indiangrovechurch.com/uploads/1/3/1/8/131871721/1129561.pdf
    • http://files.stemfutureleaders.com/uploads/1/3/1/4/131453127/ramidepemiruzato.pdf
    • http://files.changingfutures.org.uk/uploads/1/3/1/6/131606087/mufegesitawiko-matuwomap-xivekun-vokozufeletefuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/kusanapagilez.pdf
    • https://cdn.shopify.com/s/files/1/0438/5875/5749/files/zenajokutorejotavexete.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/vijetimuwapaxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/31872166470.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1715/files/jodasijuwizowepodeso.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9735/files/tenesarigesenibizefelufen.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/85315853238.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52244446143.pdf
    • https://cdn.shopify.com/s/files/1/0434/0390/3127/files/28703535493.pdf
    • https://cdn.shopify.com/s/files/1/0438/8143/1195/files/vabetegepuxuzobuvejini.pdf
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/11643284743.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_off000072a9.bin
365996ddc490a3653dc81d45469b6b658555dffe3d9f16f2959406c5cf15ad5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A9 4448 bytes
font_01_sfnt_off000081ca.bin
1d3a938e3bf688a35766bb2a7fc0f20f124a29338c82fe8dfc12c8311cf18cb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81CA 13956 bytes

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