Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be2aa3b219a051c…

MALICIOUS

PDF

44.8 KB Created: 2020-08-02 00:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60b371fb202264967349ce3502cad73b SHA-1: 515d306601b9aeacbc2be486b3ad08558bc924cf SHA-256: 8be2aa3b219a051c1d665dee436e743fa63aecee5c85d421f79e1e64f8fc2a11
140 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body itself contains obfuscated text and a lure to enable editing, suggesting an attempt to bypass security measures. The primary malicious URL identified is https://ttraff.cc/pify?keyword=boisoft+video+splitter, which is likely used to redirect users to a malicious site.

Heuristics 4

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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=boisoft+video+splitter
    • http://files.mullinsliquidations.com/uploads/1/3/1/1/131164399/xuzifipidos.pdf
    • http://files.yussuk.com/uploads/1/3/2/3/132302735/997890.pdf
    • http://files.holleyslandscaping.com/uploads/1/3/1/4/131409574/tujerurusamajuz.pdf
    • http://files.wifespiration.com/uploads/1/3/2/6/132695994/voderunofebesel-rapanap-dixuvuzaratuwi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/45179893748.pdf
    • https://cdn.shopify.com/s/files/1/0435/8481/5259/files/vigurozumagudal.pdf
    • https://cdn.shopify.com/s/files/1/0436/0824/4381/files/73046117841.pdf
    • https://cdn.shopify.com/s/files/1/0435/6535/1073/files/bugedojilaropow.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8988/files/fl_studio_12_bible.pdf
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/99077525599.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84302935330.pdf
    • https://cdn.shopify.com/s/files/1/0440/6483/3686/files/32396147195.pdf
    • https://cdn.shopify.com/s/files/1/0437/5573/3153/files/pawizujir.pdf
    • https://cdn.shopify.com/s/files/1/0432/3144/5156/files/fukeratekijeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/pisewa.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_off0000736f.bin
0a251f5d8c9669b658ae02fc38d5a926544b6ea2bd1124486175143fd5553ec0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736F 4932 bytes
font_01_sfnt_off00008454.bin
bd7e8d7e45ff035594afd78334cd4d72f637d19475fac1d3aeaaef1618e0ee19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8454 9968 bytes

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