Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8fe6e9c56bcc35…

MALICIOUS

PDF

51.5 KB Created: 2020-07-31 11:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8516a70e40b22461657f4815ae7b12e3 SHA-1: 6eeb0dab500fe8bc4e0b3f7135afd114f1dc4fb9 SHA-256: aa8fe6e9c56bcc35646c8f2f62bf56106ab4a4dd46c11ade93f4161b6bae8e19
128 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.cc), and another flagged a large 'link farm' hosted on Shopify. The document body, though heavily obfuscated, contains keywords suggesting a lure related to a 'spectrometer experiment'. No scripts were extracted, but the sheer volume of outbound links suggests a primary goal of redirecting the user to potentially malicious or unwanted content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=constant+deviation+spectrometer+experiment+pdf
    • http://files.hillsboroughartshatchery.com/uploads/1/3/0/7/130775940/4767653.pdf
    • http://files.jonahgreenart.com/uploads/1/3/1/1/131164009/53bf45bbcc8a16.pdf
    • http://files.maithainc.com/uploads/1/3/2/6/132681464/jeparuvedapisil-satiporuguve-kuranu.pdf
    • http://files.neilaquino.com/uploads/1/3/0/8/130874180/wajaj.pdf
    • http://files.coregenicconstruction.co.uk/uploads/1/3/1/6/131637218/6a28fc0db9.pdf
    • http://files.hillsb
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64238793182.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/polipazujepomopinigemol.pdf
    • https://cdn.shopify.com/s/files/1/0428/4763/3575/files/43308742481.pdf
    • https://cdn.shopify.com/s/files/1/0433/8630/6710/files/82064706902.pdf
    • https://cdn.shopify.com/s/files/1/0433/6123/9192/files/21346002447.pdf
    • https://cdn.shopify.com/s/files/1/0435/7573/8527/files/44128347011.pdf
    • https://cdn.shopify.com/s/files/1/0435/2668/4824/files/48466863184.pdf
    • https://cdn.shopify.com/s/files/1/0432/0703/2990/files/39347080641.pdf
    • https://cdn.shopify.com/s/files/1/0431/5512/8480/files/48668980000.pdf
    • https://cdn.shopify.com/s/files/1/0440/8023/4661/files/jirinubirutozig.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/gevunototera.pdf
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/sobitanowaxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2040/3356/files/foxuteguzagalodelunil.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_off0000761a.bin
f868de0b7426199090fd1fe9fd199383beecd66f29d7ed6ac4a3d6211cb78762		 pdf-font-stream PDF embedded font (sfnt) at offset 0x761A 5208 bytes
font_01_sfnt_off000087c0.bin
d946921f4dab5ea032ee69c1cc41791968e4d92b258b716b57b22e9e60b032a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87C0 10188 bytes
font_02_sfnt_off0000aabd.bin
062f8a7185608a18dbd56baf48eb14c791e3c6ea8866a2ddd6a03467109098f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAABD 16072 bytes

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