Malicious PDF — malware analysis report

Static analysis result for SHA-256 b208677a2c0b5127…

MALICIOUS

PDF

55.1 KB Created: 2020-09-16 19:05:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2b145dbb631e1e15d3bf5cf9cfa5d1e SHA-1: f2494252c9e5fa5989936ba2376047e687127cbc SHA-256: b208677a2c0b51279197a41bdd9e4fd5c3e1aeb76c4ab383eaa422572633726f
150 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 'https://ttraff.me/pify?keyword=real+world+example+of+central+place+theory'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing its role in the attack. The presence of numerous other embedded URLs, some of which are benign, suggests a link farm or a method to obscure the primary malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/pify?keyword=real+world+example+of+central+place+theory
    • http://files.dotsleadership.com/uploads/1/3/1/4/131453718/xexupoli.pdf
    • http://dedelus.organichead2toe.com/uploads/1/3/0/8/130874222/sonaxavu_wofakivow.pdf
    • https://c0024e5b-650d-480e-b1b6-1121ad8f9499.filesusr.com/ugd/bba345_2c1026d9026e4d8f8d36d00f41bfc1d8.pdf?index=true
    • https://73e66511-3033-452d-ab2e-8d70c9b0eaa1.filesusr.com/ugd/e948c1_96319e4a18cb44c89b4b3f9de0fc0bcb.pdf?index=true
    • https://33bed742-6482-4240-84c3-10cd33320220.filesusr.com/ugd/65b209_44d4cc3e77e8439ea8943cd571ba96ee.pdf?index=true
    • https://0bfaad4e-7eeb-4321-a88f-0040188dae63.filesusr.com/ugd/3283b0_fce1aca0df9f495d9e6c7d232cd1c97d.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/47259705884.pdf
    • https://cdn.shopify.com/s/files/1/0437/7578/7169/files/tedalovetup.pdf
    • https://cdn.shopify.com/s/files/1/0432/5854/4292/files/818177837.pdf
    • https://19050975-6eac-4107-a9f2-fd0f00e433c2.filesusr.com/ugd/70e7d4_c553d6c06bc04ad5aaedf58fe8225438.pdf?index=true
    • https://ee4bb60c-ddc5-40f5-8ece-1892d4b9bb55.filesusr.com/ugd/fd4c29_671a14a98c3746f5a1d8cf97cc399a0b.pdf?index=true
    • 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_off000099b1.bin
4aceb3690bdfa6dd2dcc51562a27e944bc2f7973211cc9126272d1de201228be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99B1 5488 bytes
font_01_sfnt_off0000ac59.bin
6ef359aedb018f2b4b72a7bbead47ca2e86aeae49439e6f5a677253293f560c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC59 10304 bytes

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