Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa290fff7e857bc…

MALICIOUS

PDF

84.6 KB Created: 2020-08-15 04:17:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f44b63180dcb2aef0c086c3074119c9 SHA-1: b59db5016f437ca2fc16fb71ce69ab703acf4fbd SHA-256: 4fa290fff7e857bc15e07fca8b118015bab83aa323cba85dad9656b9c13f4013
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=bible+study+for+couples+pdf', indicating a lure to a malicious site. The PDF_SEO_LINK_FARM heuristic suggests a large number of similar links are generated, likely for SEO poisoning to attract victims.

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=bible+study+for+couples+pdf
    • http://bowuxijas.calhounmiddleschoolband.com/uploads/1/3/1/4/131407406/9a1be73.pdf
    • http://files.clevelandhousepainters.com/uploads/1/3/2/3/132302718/nizusumad.pdf
    • http://files.i-am-me-pt.com/uploads/1/3/0/7/130740442/kedad.pdf
    • https://cdn.shopify.com/s/files/1/0429/2096/8358/files/lifilibimirexoti.pdf
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/64935680235.pdf
    • https://cdn.shopify.com/s/files/1/0448/0316/2269/files/makenowumatonepipaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/2249/0528/files/download_to_excel_converter_full_version_crack.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/womonevixaxijebuvi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/juxeputedofodalibiwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20136550696.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/child_development_13th_edition_john_santrock.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/268545532.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/61467195026.pdf
    • https://cdn.shopify.com/s/files/1/0440/2026/9221/files/pafojex.pdf
    • https://cdn.shopify.com/s/files/1/0428/5975/7727/files/jizopisazatoxidozuxigego.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_off00010f27.bin
2c14d04baff8cffd8adcccdd9e67890e91c1ae707ae606b24a2fc0a5bb60d6ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F27 5228 bytes
font_01_sfnt_off000120fc.bin
da5f23b381f800cdc18a0f4af4cf06d99b805d10ea8eff73282fb74e27af0e50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120FC 10704 bytes

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