Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d818503d62cae51…

MALICIOUS

PDF

67.1 KB Created: 2020-08-16 22:21:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f32f2600d2388080c11030b09cec0f3c SHA-1: 1035cae2f9684c7dc3221757be65820bc9568d98 SHA-256: 1d818503d62cae5179db106a7538bc4480a0ccecc0638bcae457a89302bd5122
128 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Freddie Mac home possible student loan guidelines' and embeds a link to a known malicious redirector. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute content widely. The presence of a malicious redirector indicates the likely intent is to lead the user to a site that will host further malicious content or phishing pages.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=freddie+mac+home+possible+student+loan+guidelines
    • http://nolojopup.cuib.eu/uploads/1/3/2/7/132712615/tizufexonefupu.pdf
    • http://files.trackingclubofma.com/uploads/1/3/0/8/130874210/3971527.pdf
    • https://cdn.shopify.com/s/files/1/0430/8313/7178/files/attached_book_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/17928712093.pdf
    • https://cdn.shopify.com/s/files/1/0432/7650/1147/files/fupowaviganavijazera.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/zubub.pdf
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/99544768535.pdf
    • https://cdn.shopify.com/s/files/1/0437/4088/9240/files/16952317630.pdf
    • https://cdn.shopify.com/s/files/1/0431/4615/0039/files/zoburewuxigamev.pdf
    • https://cdn.shopify.com/s/files/1/0436/9671/7992/files/vafikalivasowefuked.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/29719679207.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/lipifajutikibose.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_off0000c8bf.bin
e01f7d7d6ff64ebc157eb9f856e7660da7efdf4af27a230e9b549bb8655f0dcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8BF 5580 bytes
font_01_sfnt_off0000db84.bin
16163a931fd7712d061b83f749e2f1585f0472de9e793a7661ad770e1f541a7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB84 10352 bytes

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