Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a08a08ca75e675…

MALICIOUS

PDF

35.0 KB Created: 2020-09-14 10:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d1e025f9317db416ec5cf8b6fb3e1d9 SHA-1: c98402cb1b730eae48d9649ff977ad58de6018fb SHA-256: 89a08a08ca75e67528edc6ff6ee2edc8fd529e91ce48f48764cc56b5ccf39c49
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, many of which are identified as part of a link farm designed for SEO manipulation. One prominent URL, 'https://ttraff.cc/pify?keyword=best+manual+die+cutting+machine+uk', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting an attempt to lure users to malicious infrastructure under the guise of providing information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.cc/pify?keyword=best+manual+die+cutting+machine+uk
    • http://zewevif.booksandspoons.com/uploads/1/3/2/6/132695471/rupukur.pdf
    • http://files.gvgktang.com/uploads/1/3/1/1/131164039/b52e2e.pdf
    • http://files.wassman.com/uploads/1/3/1/6/131637953/rijasivemuso.pdf
    • http://files.windowsofhopeservices.com/uploads/1/3/1/8/131872021/6a291142fc5dc.pdf
    • http://gojebe.ndgiftedchildren.org/uploads/1/3/0/8/130815009/99cc1976e8ffeb.pdf
    • http://files.cherokeecountydemocraticparty.com/uploads/1/3/0/8/130813428/9530187.pdf
    • http://files.earthtopdx.net/uploads/1/3/0/8/130874382/aedc0295d631.pdf
    • http://files.richardmccooey.org/uploads/1/3/2/6/132695741/eef02688ec10c5.pdf
    • http://datidud.ryandowellart.com/uploads/1/3/1/6/131637254/mamaboxapapadix_pupamo_patupak.pdf
    • http://fijimaxun.rebeccabeaird.com/uploads/1/3/0/7/130738623/ledujiwogi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/fe0276_602500847c3543b8847e89dbfbe867f4.pdf
    • https://static.usrfiles.com/ugd/22bf55_b48173b0eb70418388ab83ddf007a0c5.pdf
    • https://static.usrfiles.com/ugd/fc3b0b_2593468a9036490182e75576a2bbfef1.pdf
    • https://static.usrfiles.com/ugd/e23fbb_32dd30ec016e4b319bd02ec3055a5c4d.pdf
    • https://static.usrfiles.com/ugd/d17951_b318f072cd464e01a6e9db6a413552a0.pdf
    • https://static.usrfiles.com/ugd/1e52da_2ac30a0d3a5c44bbbce2582b2b21d78c.pdf
    • https://static.usrfiles.com/ugd/0d089b_d39ec8f8646647508257540ac24b6dd3.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007515.bin
1ee7f8ae55f5b691958856b1bf44c05ded2a74e24619293d98377797a6d34205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7515 5140 bytes

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