Malicious PDF — malware analysis report

Static analysis result for SHA-256 48b3bbcd0fa01a77…

MALICIOUS

PDF

46.2 KB Created: 2020-09-17 13:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 749d2e534aea18b0291801b416f4d2c2 SHA-1: b1fffc19c9972ded14631e1b79f8eeb856464d40 SHA-256: 48b3bbcd0fa01a77b1d7789f1ece463314094f207f9f0192e19c5e9b280dfae8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it exhibits a PDF link farm, embedding numerous URLs pointing to external PDF documents hosted on various domains. These links are likely part of a SEO poisoning or content distribution scheme. No scripts were extracted from this sample.

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/wix?keyword=ninth+crusade+meme
    • http://jojumawa.midwestdrain.com/uploads/1/3/0/7/130776760/doruluxuw.pdf
    • http://vobedito.cozyguesthouses.com/uploads/1/3/0/8/130873710/dokuzasafu.pdf
    • http://fojeloju.advisorschoicemarketing.com/uploads/1/3/0/8/130874493/kujawijifitezomoxu.pdf
    • http://wiwapoz.michaudwellness.com/uploads/1/3/1/0/131070317/9306285.pdf
    • http://vimukidu.jewelrysalehub.com/uploads/1/3/2/8/132815732/mujewavimuwiluz.pdf
    • http://nijifuve.matthewjhayes.com/uploads/1/3/1/0/131070722/xulowederuzo.pdf
    • http://gobulo.ywcahealthandfitness.org/uploads/1/3/2/6/132681481/d3d4075199.pdf
    • http://files.trueelegancetransportation.com/uploads/1/3/1/4/131453076/mupanivefibakupibi.pdf
    • http://files.stewartsrestoration.com/uploads/1/3/2/6/132682040/7247866.pdf
    • http://files.pulexart.com/uploads/1/3/0/7/130739126/sefibutusebulo_berisu_mepobelirud.pdf
    • http://fenuluzub.hotelajman.com/uploads/1/3/2/7/132712596/4117263.pdf
    • http://files.newmapsoftheoldwest.com/uploads/1/3/0/7/130775032/nopamusoku_bisova_domewewofu.pdf
    • https://4829cc94-7557-47c3-bc59-77526d2ffc1b.filesusr.com/ugd/735424_7761df1bf57441e49f66831470812cfb.pdf?index=true
    • https://bf494cdb-16bd-40aa-8c18-a6a0850a8083.filesusr.com/ugd/3bcfef_2fbd27391eac414ba5718c0fc3a0ab1b.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_off00007881.bin
8a8bb6b0cfe131cf45265ee4abf603092222a0b6328ced7fe9a23fd30639f7ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7881 5116 bytes
font_01_sfnt_off000089c0.bin
faead3ecad25af582b7e59a89c0a4ebc158ba36387ed520ebd05d7d8a977164a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89C0 10104 bytes

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