Malicious PDF — malware analysis report

Static analysis result for SHA-256 98707481589d26ce…

MALICIOUS

PDF

48.8 KB Created: 2020-08-17 14:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43b62e5ea89d9bdab7f7bc9333dda14f SHA-1: 9340c2a91581a574c880cb146efcaac3b1e5ea3b SHA-256: 98707481589d26ce45f2e02cbdfcb19d8e68d85f3246b3609e63054bcc3baca4
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'project semicolon book pdf'. The embedded links, including one to 'ttraff.com', reinforce the malicious redirector finding. The primary intent appears to be directing the user to malicious infrastructure.

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=project+semicolon+book+pdf
    • http://kewumifaj.brianchilders.org/uploads/1/3/0/9/130969192/8082221.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2520/files/mopumatogativigonupob.pdf
    • https://cdn.shopify.com/s/files/1/0431/0309/2898/files/pretty_print_json.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/saninoninozatigixisodatu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/949540652.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/6166286736.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/9006800676.pdf
    • https://cdn.shopify.com/s/files/1/0432/7761/5262/files/53707441907.pdf
    • https://cdn.shopify.com/s/files/1/0433/2604/6362/files/80239968879.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1044/files/55541824877.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/accenture_digital_transformation_2017.pdf
    • https://cdn.shopify.com/s/files/1/0433/3066/6651/files/gamazu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/42834501653.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c36.bin
b0ba1f0d38b4d61522055e0c91a916e844031f35a7762da6724d92df4a9ea3f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C36 5372 bytes
font_01_sfnt_off00007e62.bin
8dff12ca060befa14a82aedc4da54b39fe911665fcf657d8e404d6f6e5a0dca6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E62 10008 bytes
font_02_sfnt_off0000a0e2.bin
cb8b0c3b75634a3ac40028f3142d2b99dbff9c8bfe93654f62892c2eba89f065		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E2 16336 bytes

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