Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b0764105c61dfb…

MALICIOUS

PDF

37.6 KB Created: 2020-08-24 22:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80e23f3810632ec19796e903edb070b1 SHA-1: 2038d11681ee92603beb2d06884d405632f8949b SHA-256: b2b0764105c61dfbccbc12dc0d21585d2fd80e8a8d8b926bc9301f6ecfc59d7c
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct execution.

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=prepositions+of+place+exercises+multiple+choice+pdf
    • http://tasiw.bychaisenicole.com/uploads/1/3/1/3/131379877/720897.pdf
    • http://lelivel.missbrittanyteaches.com/uploads/1/3/1/8/131857631/8a59e568538e6.pdf
    • http://files.wilmingtoncarenet.org/uploads/1/3/0/8/130814980/9ab052acdda0ba4.pdf
    • http://ledob.jacquelinenicholls.com/uploads/1/3/0/8/130874592/zejisofasejokazi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/75819047868.pdf
    • https://cdn.shopify.com/s/files/1/0440/0647/3886/files/19688152214.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/minecraft_tinkers_construct_modifiers.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8790/files/add_png_image_to_file.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/mathematical_biology_murray.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/78116265009.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/9253475812.pdf
    • https://cdn.shopify.com/s/files/1/0438/4640/2213/files/rilalotivezamuwifan.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_off00005532.bin
4143fd914d821619165fd68e26a19fa2a5c2acbec659043ec72745e491494ae9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5532 5464 bytes
font_01_sfnt_off00006794.bin
9dff75aaff87089160c5c11882c91d54d9a78285743279614dab02acfe025ee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6794 9980 bytes

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