Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc96b704f08277d0…

MALICIOUS

PDF

49.9 KB Created: 2020-08-25 14:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8df0b71a94a1e9807eb6b311e9b954d1 SHA-1: f5e4393ff2db4a0fc35c0794ae3d7f0e7690c8a6 SHA-256: fc96b704f08277d026a1c53cd5a95a2870d559936ea33888abecb6e7b79a785d
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, contains text referencing "Jupyter notebook cheat sheet windows" and the malicious URL, suggesting a lure to trick users into visiting a malicious site. The presence of a link farm further supports the malicious intent of driving traffic to potentially harmful content.

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=jupyter+notebook+cheat+sheet+windows
    • http://regaf.abundancecreativearts.com/uploads/1/3/0/7/130776779/f38dd5fdcde.pdf
    • http://files.myscribbleit.com/uploads/1/3/1/3/131379946/c1b30f5b7.pdf
    • http://files.saintceciliasingers.org/uploads/1/3/1/6/131606208/9500416.pdf
    • http://files.wildroseworkingbelgians.com/uploads/1/3/0/7/130738892/3724002.pdf
    • http://files.todpardon.com/uploads/1/3/2/3/132302716/2936229.pdf
    • https://cdn.shop
    • https://cdn.shopify.com/s/files/1/0431/3638/5181/files/sejuraren.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/17983089601.pdf
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/android_9._0_samsung_s9.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/attendance_allowance_claim_form_address.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/bbc_english_grammar_book.pdf
    • https://cdn.shopify.com/s/files/1/0452/5611/4337/files/ad_nauseam_mtg_guide.pdf
    • https://cdn.shopify.com/s/files/1/0466/2886/4165/files/48695284341.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/certificado_de_origen_tlcan_formato.pdf
    • https://cdn.shopify.com/s/files/1/0428/6660/6247/files/anemia_ferropenica_oms.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_off000060fd.bin
82231f06cbaa29e6272c0044dfcfe83c414b95c1ae08f3c0138e471c0cce8303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60FD 5516 bytes
font_01_sfnt_off000073cd.bin
a0bc089cc37bcade462bdd0ab4fb53c3da3404505077531b35835f50441ad00e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73CD 15156 bytes
font_02_sfnt_off0000a3d0.bin
2115a0c52e1e54814d5c486278214d6ff31d60a5e9eab287d031ca94d9a981e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D0 16452 bytes

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