Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae6a14cc8c435fd…

MALICIOUS

PDF

44.1 KB Created: 2020-08-06 05:38:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49630f70b6ce3df60be20896b878edda SHA-1: 8f1f6cf1ec320fc094c16a5f8808a41e9f6f33bd SHA-256: fae6a14cc8c435fde8a5ad5cf3eec09c00f46921ab2e7d92bf72e087de2daf5f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'cds exam preparation books pdf' and the URL 'https://ttraff.com/pify?keyword=cds+exam+preparation+books+pdf', suggesting a lure to a malicious site disguised as educational material.

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=cds+exam+preparation+books+pdf
    • http://files.prenatalcradlesupplies.com/uploads/1/3/1/4/131437531/6976242.pdf
    • http://sudin.staiguefortcottage.com/uploads/1/3/0/9/130969465/309982.pdf
    • http://files.labordayrodeo.com/uploads/1/3/2/7/132710683/4805136.pdf
    • https://cdn.shopify.com/s/files/1/0431/8845/3533/files/6509110971.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdf
    • https://cdn.shopify.com/s/files/1/0437/9561/1810/files/kohler_generator_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nepel.pdf
    • https://cdn.shopify.com/s/files/1/0429/8440/7199/files/harcourt_phonics_practice_book_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0428/3455/9143/files/56237229365.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/arrowhead_pricing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/11867331118.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/98778352967.pdf
    • https://cdn.shopify.com/s/files/1/0437/4495/2471/files/stars_wars_theme_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/sipode.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/3727761293.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/
    • https://cdn.shopify.com/s/files/1

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fa8.bin
6ac28730aa30e7ae508b272624ea0bb747c2fe567cc928b9db3b7dd3e07cad8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA8 5332 bytes
font_01_sfnt_off000081ac.bin
1a199bac1116413dcdb052b8f1ba86e73c6c154d8acc3c7836413896c44c0a52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AC 9852 bytes

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